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Home My WebLink AboutAPPLEWOOD APTS FRIRE INSPECTION - 03-00021 - American Manor Apartments - RemodelREXBURG MADISON COUNTY FIRE DEPARTMENT P.O. Box 280 26 North Center Rexburg, Idaho 83440 (208) 359-3010 ,T1IIS IS TO GIVE NOTICE THAT: An inspection of the Applewood Apartments located at 151 South 1st East in Rexburg, Idaho was conducted on this date and that as nearly as could be determined, was found to be in compliance with the Uniform Fire Code and ordinances of the City of Rexburg that are presently in effect, with the following exceptions: Sec. 901.4.4 Post address on the front of the building, wrong areas. The at correct the problem. occupants. Sec. 1107.1 The venting from gas appliances needs to be checked. Some pipes were dented and some pulled loose with screws missing. of ,. tha egress window. Some balconies_ only hate one_ way off_ Sec_ 1103.3.2.1 Storage shall be orderlyin storage areas. Ceneral housecleaning needs to be done in these areas. Sec._ 1103.3.2.4 Combustible materials ,..shall -_not bestured in boiler rooms, mechanical rooms or electrical equipinent. rooms. Note: This inspection was necessarily limited to items and areae in plain and full view of the inspector. This inspection cannot ensure or verify the compliance of the items or areas that are obstructed from the inspector's view by construction or access. The City of Rexburg can accept no responsibility for verification of code compliance in such areas. Such verification becomes the sole responsibility and liability of the property owner. Persons preforming corrective action should contact the Rexburg Madison County Fire Department at (20a) 359-3010 for specifics or questions regarding these regriremetts. Any observable deficiencies which are a distinct hazard to life and/or property are subject to criminal enforcement if they are not remedied immediately. February 2, 1996 Dee Owens Date Fire Inspector REXBURG MADISON COUNTY FIRE DEPARTMENT P.O. Box 280 26 North Center Rexburg, Idaho 83440 (208) 359-3010 Fire Extinguishers Inspection and Maintenance Fire extinguishers require an inspection ever_ 30 days. If circumstances require it may need to be more frequent. Inspection shall include at least the following items: (a) Located in designated place. (b) No obstruction to access or visibility. (c) Operating instructions on nameplate legible and facing outward. (d) Seals and tamper indicators not broken or missing. (e) Determine fullness by weighing or "hefting." (f) Examine for obvious physical damage, corrosion, leakage, or clogged nozzle. (g) Pressure gage reading or indicator in the operable range or position. Any problems need to be corrected immediately or a replacement extinguisher provided until it can be. Fire extinguishers require maintenance not more than _one Year apart. Maintenance shall include a through examination of the three basic elements of an extinguisher: (a) Mechanical parts, (b) extinguishing agent, and (c) expelling means. Stored pressure extinguishers require a hydrostatic test every 12 years and need to be emptied every six years and subjected to maintenance procedures. The owner could preform the inspection procedure with proper training. I would recommend that you have an outside source preform the maintenance of your extinguishers. REXBURG MADISON COUNTY FIRE DEPARTMENT P.O. Box 280 26 North Center Rexburg, Idaho 83440 (208) 359-3010 Smoke Detectors and Locations Smoke detectors shall be installed in accordance with the approved manufacture's instructions. The 1994 UBC states in Sec. 310.9.1.4 Location within dwelling units. In dwelling units, a detector shall be installed in each sleeping room and at a point centrally located in the corridor or area giving access to each ;,separate sleeping area. When the dwelling unit has more than one story and in the dwellings with basements, a detector shall be 'installed on each story and in the basement. In dwelling units where a story or basement is split into two or more levels, the smoke detector shall be installed on the upper level, except that when the lower level contains the sleeping area, a detector shall be installed on each level. When sleeping rooms are on an upper level, the detector shall be placed at the ceiling of the upper level in close proximity to the stairway. In dwelling units where the ceiling height of a room open to the hallway serving the bedrooms exceeds that of the hallway by 24 inches or more, smoke detectors shall be installed in the hallway and in the adjacent room. Detectors shall sound an alarm audible in all sleeping areas of the dwelling unit in which they are located. Some of your smoke detectors are very poorly located, I would recommend that you relocate them using the UBC section to provide better warning. Avoid the dead air spaces that we discussed (six inches.down or out). The smoke detectors need to be tested at least monthly. You should use a test smoke and not just the test button. Batteries need to be replaced yearly. I realize that the smoke detectors were not required in the sleeping rooms at the time of construction but would recommend that you install them if possible. CITY OF REXBURG UNIFORM BUILDING CODE BOARD OF APPEALS February 20, 1996 Joe Laird, PE City of Rexburg Building Official PO Box 280 Rexburg, ID 83440 RE: Stephen Clark Development - Board of Appeals Recommendations Dear Joe: .,.sVeb-96W,d2-2.20 Under separate cover we gave formal response to Mr. Clark's appeal of your building inspections on the subject property. As a related action to that appeal, we members of the Board of Appeals desire to convey to the City some additional concerns and recommendations we have concerning the subject property and our function as a review board: 1) We were able to tour the facilities at the express invitation of Mr. Clark. Based on our observations, it is strongly felt by Board members that the manner and workmanship of construction is not at all representative of what we feel should be the community standard for building practices. 2) As a result of the inspection, we are concerned that there may be further issues with regard to the building codes, particularly in the area of structural aspects. 3) We concur with the building official's determination that the newest structure (Building 1A) is indeed a three-story structure. However, Mr. Clark claims that at the time the building was proposed the City Council made the determination that it was a two-story structure with a basement which, as coming from the highest building authority in Rexburg, may constitute a waiver of code requirements by definition. We request clarification from the City with regard to this matter. 4) We strongly recommend the Owner(s) hire their own professionals (structural engineers, mechanical engineers, electrical engineers, architects, etc.) to review all buildings and all construction with respect to the Code and that reports of their inspections or recommen- dations be filed with the City. We recommend that any further consideration of the Certificate of Occupancy be wholly conditional on this recommendation as a minimum. 5) We are struggling with the definition of our responsibilities with respect to duties of the Appeals Board and the Code, and also with respect to providing recommendations and suggestions to the City and Building Official. In short, how far can or should be go in response to appeals made? We would appreciate the opportunity to meet with you, the Mayor, and the City Attorney to help clarify these concerns. Joe Laird, PE February 20, 1996 Page 2 We are appreciative of the opportunity to provide community service and trust that our efforts are in accordance with the City's vision of our function and that our input is helpful. We would appreciate your consideration of the foregoing and look forward to receiving clarification of our duties and responsibilities in order for us to more effectively serve you. Sincerely, CITY OF REXBURG UNIFORM BUILDING CODE BOARD OF APPEALS Charles Cartmill Winston Dyer Ted Hill Bart Stevens John Watson II IJ Lit,- If, ILIE 14: 'Jo IL: ILL Nu: IIIA=1 I -'N_; PHILIP E. BATT" u,,.on" ,Stare of Idaho DEPARTMFNT OF LABOR AND INDUSTRIAL ,SERVICFS POCAfELLO AREA OFFICE February 6, 1996 Stephen E. Clark 625 S. 5000 W. Rexburg, ID 83440 Dear Mr. Clark: 611 Wllaon, SUlla 4C P.O. BOX 4963 Pocatello. ID a320rr4963 (206) 236-6060 FAX (206) 236-6221 After reviewing and inspecting the apartments located at 151 S. First F. in Rexburg, I found that a good portion of the electrical installation was inadequate and in poor workmanship. I was only able to see the finished product and have no idea of what lies behind the walls. In any case, the requested inspections indicate a large amount of redundancy and repeat violations (please gee enclosed findings). If I can he of further assistance, please feel free to contact me at (208) 359-3025. Sincerely, Scott Richter Electrical Inspector rlm Enclosures c: Terry L. Coumerilh Equal Opportunity Employer TO: EIE'd-�;F�iJRG FED -06-'9E. TUE 14:54 Ill: TEL NO: U136 P01 Ef.411 STATE OF IDAHO 2/20/92R DEPARTMENT O)LABOR ANO INDUSTRIAL SERVICES ELECTRICAL DIVISION 277 NORTH SIXTH - STATEHOUSE MAIL BOISE, 10 83720.6000 (208) 314.21133 NAME: Stephen E. Clark ADDRESS! 625 S. 5000 W. Rexburg, ID 83440 PERMIT NUMBER: REDUESTED INSPECTION FINBINOS APPLICANT; NAME, Stephen E. Clark ADDRESS: 625 S. 5000 W. Rexburg, ID 83440 TYPE OF BUILDING: Student Apartments LocAT1oN OF BUILDING: 151 S. First E. , Rexburg, ID 83440 ............................................................................................................................. THE ELECTRICAL INSTALLATION DESCRIBED ABOVE HAS BEEN INSPECTED AND WAS FOUND TO BE ESSENTIALLY IN ACCORD WITH THE MINIMUM REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE AT (HE TIME OF INSTALLATION EXCEPT AS FOLLOWS: ._�.0 f{EFENENCE _! FINOIN •;__ L ndry Room 336-]0-b jam. Addition 1 Scott Richter ELECTRICAL INSPECTOR Ea not secured along framing members e 2/6/96 DATe -� TCS : REXBLIRG --- --------f Eli-bf,-'S6 EIJE 11:51 Ili: TEL NO: .—H135 Pol EF -411 STATE OF IDAHO 2120/92R DEPARTMENT Of LABOR AND INDUSTRIAL SERVICES ELECTRICAL DIvIs10N 277 NORTH SIXTH - STATEHOUSE MAIL BOISE, ID 8372D-6000 (208) 314.2187 NAME: Stephen E. Clark Ammaess:625 S. 5000 W. Rexburg, ID 83440 PERMIT NUMBER: REDUE$TED INSPECTION FINDINGS &PLT CANT: NAME: Stephen E. Clark ADDRESS1625 S. 5000 W. egg ; TYPE OFBUILDINO: Student Apartment- LOCATION l ar men LOCATION OF BUILDING: y s1 S. Flrst F RexburE ID 83440 .............................................................................................................................. THE ELECTRICAL INSTALLATION DESCRIBED ASOvE FAS SEEN INSPECTED AND WAS FOUND TO BE ESSENTIALLY IN ACCORD WITH TMt MINIMUM REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE AT THE TIME Of INSTALLATION EACEPT AS 70LLOv6: NEC REfERENCE rINO IW Laundry Room Surface mounted fluorescent fixture over dryer #4 hanging on 41�.-15-a I on one side not secured to ceiling. 370-25 ' 1 Behind dryer #15 and washer #8 outlet has no cover plate. 300-4 j In unfinished_ bathroom romex and ceiling box hanging from -.Lo-n. I ouriace mounteu iluorescent fixtures not grounded Scott Richter 2/6/96 ELECTRICAL INSPECTOR DALE A■ I I. i; - lc, • jb WE 14:4`.) I D: "FEL NO:- q133 F'6. EF -41 I STATE OF IDAHO 2/20/92R DEPARTMENT OF LABOR AND INDUSTRIAL SERVICES ELECTA(CAL DIvISIDN 277 NORTH SIXTH - STATEHEIUSE MAIL BOISE, 10 83720-6000 (208) 334.2183 REQUESTED INSPECTION FINDINGSEUUt iT , APPL(CANT- NANE; Stephen E. Clark NAME, Stephen E. Clark ADDRESS: Rexburg, ID 83440 PERMIT NUMBER, ADDRESS:625 S. 5000 W. Rexburg, ID 83440 TYPE OF 8UILOINC:tit11jjent ADA tMe1C ts L-OCA7IDNOF8UILOIN0:_j5L S. First F. Rexburg.—ID 83440 ...wrv..ru..rvvrtrfroA........A. vv....... ............. ur. I..... ............. r v.............................. THE ELECTRICAL INSTALLATION DESCRIBED ABOVE HAS BEEN INSPECTED AND WAS FOUND TO BE ESSENT(ALLT IN ACCORD WITH THE MINIMUM REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE AT THE TIME OF INSTALLATION EXCEPT AS FOLLOW5: DREFEgElcrFIND 5 Unit 114 410-4 In shower room light fixture not approved for damp locations. Scott Richter ELECTRICAL INSPECTOR Its in natnroom o os t outlets not GFIC protected. oved for damp location. 2/6/96 DATE FED -06—'96 TUE 14:56 ID: TEL NO; H136 P03 EF -411 STATE OF IDAHO 2/20/92A DEPARTMENT OF L.AROR AMD INDUSTRIAL SERVICES ELECTRICAL DIVISION 277 NORTH SIXTH - STATEHOUSE MAIL BOISE, ID 83720.6000 12081 334.2183 PROPERTY OWNER: NAME: Stephen E. Clark ADaNEss: 625 S. 5000 W. Rexburg, ID 83440 PERMIT NUMBER: REOUESTED IMSPECtIQN FINDINGS APPLICANT: NAME: Stephen E. Clark AwREss: 625 S. 5000 W• Rexburg, TTPEOPBUILDING: Student Apartments LOCATION OF BUILDINOc 151 S. First E., Rexburg, ID 83440 .............1.it....f.atf....Y.........................,....,.....I...,.......*............... ............. ................. THE ELECTRICAL INSTALLATION DESCRIBED ABOVE WAS BEEN INSPECTED AND WAS FOUND TO BE ESSENTIALLY IN ACCORD WITH THE MINIMUM REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE AT THE TIME OF INSTALLATION EXCEPT AS FOLLOWS: NEC REFERENCE FINDINGS In panel there are open splices not closed. 210 -8 -LF In bathroom opposite vanity, outlets not GFIC protected. 41.0-4 j In shower room, light fixture not approved for damp location. 1 ,Scott Richter ELECTRICAL INSPECTOR k. '16/96 DATE FED -06-'96 TUE 14:52 Ill: TEL NO: 0135 F'O2 EF0 STATE OF IDAHO 2/20/99 2R DEPARTMENT OF LABOR AND INDUSTRIAL SERVICES ELECTRICAL DIVISION 277 NORTn SIxTH • .SIAIEHOUSE MAIL BOISE, ID 83720.6000 (208) 334.2183 REOUESTEO kEEC110N FINDINGS !% PROPERTT OWNER: APPLICANT: NAME: Stephen E. Clark NAME: Stephen E. Clark ADDRESS: R .5 5000 W. Rexburg, ID 83440 PERMIT NUMBER• ADDRE5SF25 S, 5000 W, Rexburg, ID 83440 TYPE OF BUILDING: Student Apartments LOCATION OF BUILDING: 151 S. First E., Itexburg, ID 83440 ..........n.................................................................. .......................................... THE ELECTRICAL INSTALLATION DESCRIIILD ABOVE HAS BEEN INSPECTED AND VAS FOUND TO DE ESSENTIALLY IN ACCORD WITH THE MINIMUM REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE AT THE TIME OF INSIALLATION EXCEPT AS FOLLOWS: -In shower r!2!2nl lightfixture. not approved for dam locaiion, : -a-x->_ ' y----'- o,)osite vanit are not GFIC protected in bathroom 1 90-4 In living room ceiling fixture flickers. Scott Richter ELECTRICAL INSPECTOR ka 2/6/96 DATE net I -Ell 06-'9F TUE 14:56 1[i: TEL N0: EP -4)1 STATE Of IDAHO 2/20/928 DEPARIMENT OF LAUOR AND INDUSTRIAL SERVICES ELECTRICAL DIVISIoN 277 NORTH SIXTH - STATEHOUSE MAIL BOISE, ID 83720-6000 (208) SSL -2183 NAME: Stephen E. Clark ADDRESS: 625 S. 5000 W. Rexburg, ID 53440 PERMIT NUMBEk: REOUESiED INSPECTION FINDINGS APPLICANT; NAME: Stephen S. Clark 4136 604 ADDRESS: 625 S. 5000 W, Rexburg, ID '83440 TYPE OF BUILDING:Student Apartments LOCATION OF BUILDING: 151 S. First E., Rexburg, ID 83440 ..............e............................................................•.................................................. THE ELECTRICAL INSTALLATION DESCRIBED ABOVE HAS BEEN INSPECTED AND WAS FOUND TO BE ESSENTIALLY IN ACCORD WITH THE MINIMUM REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE AT THE TIME Of INSTALLATION EXCEPT AS FOLLOWS: r 3$Rnmox rimn-ng alone wdllg and ceiliniz Sur.iaces. _� 300-4 2 tlets 336-15 Oven romex not nr staoled. 300-15-b Hornox in cellincr np1jt,.PA with no box, Unit 112 ; 210-8-a-1 In bathroom onno,ite manity nnriers not FFTr, prnt + .i 410-4 ; In shower room, light fixture not approved for damp location. Scott Richter ELECTRICAL INSPECTOR Ye 2/6/96 DATE CITY OF REXBURG UNIFORM BUILDING CODE BOARD OF APPEALS February 20, 1996 Mr. Stephen Clark, et al. 625 S 5000 W Rexburg, ID 83440 RE: Building Inspection Appeal for Applewood Apartments Dear Mr. Clark, et al.: 96-999 W11esUeb-8(Va1rd2.20 The Uniform Building Code Board of Appeals, duly established by action of the Rexburg City Council, has met to consider your appeal over the Building Inspection Report of the Applewood Apartment located at 151 S 1st E in Rexburg. We have considered the Building Inspector's reports of February 9, 1996 for buildings 1A, 1B, iC, 2, 3, and 4 in accordance with our authority as we understand it from the Code and have made the following determinations: 1) The Building Official's reports appear to be in compliance with applicable provisions of the Uniform Building Code and the inspections were not completed in an arbitrary nor capricious manner. 2) Previous actions by the Building Inspector(s), the Inspection process, the issuance of permits, and the issuance of a certificate of occupancy do not absolve the building owner(s) of the responsibilities to meet all applicable provisions of the Code. Specifically, Section 307(f) gives specific authority to suspend or revoke a certificate of occupancy issued under the provision of the Code whenever '...it is determined that the building or structure, orporlion thereof, is in violation of any ordinance orregulation oranyprovisions of this (UBC) code". If further information is required, please advise. Sincerely, CITY OF REXBURG UNIFORM BUILDING CODE BOARD OF APPEALS Charles Cartmill Ted Hill John Watson cc: City of Rexburg Winston Dyer Bart Stevens 14 T 23-A UNIFORM BUILDING CODE TABLE NO.23-A—UNIFORM AND CONCENTRATPn I nano USE OR OCCUPANCY CATEGORY DESCRIPTION UNIFORM LOADI CONCEN. TRAINED LOAD I. Access fluor systems Office use 50 20002 Computer use 100 20002 2. Armories 150 0 3. Assembly areas) and auditoriums and balconies therewith Fixed scaling arens 50 0 Movable scaling and other areas 100 0 Stage areas and enclosed platforms 125 0 4. Cornices, marquees and residential balconies 60 0 5. Exit facililicsb 100 0$ 6. Garages General storage and/or repair 100 6 Private or pleasure -type motor vehicle slot age 50 6 7. hospitals Wards and rooms 40 10002 8. Libraries Reading rooms 60 10002 Stack rooms 125 15002 9. Manufacturing Light 75 20002 I lcnvy 125 30002 10. Offices 50 20002 11. Printing plants Press rooms 150 25002 Composing and linty pe rooms 100 20002 12. Residential' 40 05 13. Rest rooms$ 14. Reviewing stands, grandstands and bleachers 100 0 15. Roof deck Same as arca served or for the type of occupancy accommodated 16. Schools Classrooms 40 10002 17. Sidewalks and driveways Public access 250 6 18. Storage Light 125 Ileavy 250 19. Stores Retail 75 20002 Wholesale 100 30002 1985 EDITION 23-A ISee Section 2306 for live load reductions. 2See Section 2304 (c), first paragraph, for area of load application. $Assembly areas include such occupancies as dance halls, drill rooms, gymnasiums, playgrounds, plazas, terraces and similar occupancies which are generally accessible to the public. ^Exit facilities shall include such uses as corridors serving an occupant load of 10 or more persons, exterior exit balconies, stairways, fire escapes and similar uses. slndividual stair treads shall be designed to support a 300 -pound concentrated load placed in a position which would cause maximum stress. Stair stringers may be designed for the uniform load set forth in the table. $See Section 2304(c), second paragraph, for concentrated loads. )Residential occupancies include private dwellings, apartments and hotel guest rooms. $Rest room loads shall be not less !hall the load for the occupancy with which they are associated, but need not exceed 50 pounds per square foot. 104 UNIFORM BUILDING CODE structure to become structurally unsafe or overloaded; will not provide adequate egress in compliance with the provisions of this code or will obstruct existing exits; will create a fire hazard; will reduce required fire resistance or will other- wise create conditions dangerous to human life. Any building so altered, which involves a change in use or occupancy, shall not exceed the height, number of stories and area permitted for new buildings. Any building plus new additions shall not exceed the height, number of stories and area specified for new build- ings. Additions or alterations shall not be made to an existing building or structure when such existing building or structure is not in full compliance with the provisions of this code except when such addition or alteration will result in the existing building or structure being no more hazardous based on life safety, fire safety and sanitation, than before such additions or alterations are undertaken. [See also Section 911 (c) for Group H, Division 6 Occupancies.] Alterations or repairs to an existing building or structure which are nonstruc- tural and do not adversely affect any structural member or any part of the building or structure having required fire resistance may be made with the same materials of which the building or structure is constructed. The installation or replacement of glass shall be as required for new installations. (c) Existing Installations. Buildings in existence at the time of the adoption of this code may have their existing use or occupancy continued, if such use or occupancy was legal at the time of the adoption of this code, provided such continued use is not dangerous to life. Any change in the use or occupancy of any existing building or structure shall comply with the provisions of Sections 307 and 502 of this code. For existing buildings, see Appendix Chapter 1. (d) Maintenance. All buildings and structures, both existing and new, and all parts thereof, shall be maintained in a safe and sanitary condition. All devices or safeguards which are required by this code shall be maintained in conformance with the code edition under which installed. The owner or his designated agent shall be responsible for the maintenance of buildings and structures. To determine compliance with this subsection, the building official may cause any structure to be reinspected. (e) Moved Buildings and Temporary Buildings. Buildings or structures moved into or within the jurisdiction shall comply with the provisions of this code for new buildings or structures. Temporary structures such as reviewing stands and other miscellaneous struc- tures, sheds, canopies or fences used for the protection of the public around and in conjunction with construction work may be erected by special permit from the building official for a limited period of time. Such buildings or structures need not comply with the type of construction or fire -resistive time periods required by this code. Temporary buildings or strictures shall be completely removed upon the expiration of the time limit stated in the permit. (f) Historic Buildings. Repairs, alterations and additions necessary for the preservation, restoration, rehabilitation or continued use of a building or structure may be made without conformance to all the requirements of this code when authorized by the building official, provided: 302.4-303.1.1 1994 UNIFORM BUILDING CODE may be further reduced to one hour where the area of such Group S, Division 3 Occupancy does not exceed 3,000 square feel (279 m). 3. In the one-hour occupancy separation between Group R, Div ision 3 and Group U Occupancies, the sepa- ration may be limited to the installation of materials approved for one-hour fire -resistive construction on the garage side and it self-closing, tight -fitting solid -wood door 11/8 inches (35 mm) in thickness, ora self-closing, tighl-fitting door having a fire -protection rating of not less than 20 minutes when tested in accordance with Part 11 of U.B.C. Standard 7-2, which is a part of this code, is permitted in lieu of a one-hour fire assembly. Fire dampers need not be installed in air ducts passing through the wall, floor or ceiling separating a Group R, Division 3 Occupancy from a Group U Occupancy, provided such duels within the Group U Occupancy are constructed of steel having a thickness not less than 0.019 inch (0.48 mm) (No. 26 galvanized sheet gage) and have no openings into the Group U Occupancy. 4. Group H, Division 2 and Group H, Division 3 Occupancies need not be separated from Group H, Divi- sion 7 Occupancies when such occupancies also comply with the requirements fora Group H, Division 7 Oc- cupancy. 302.5 Heating Equipment Room Occupancy Separation. In Groups A; B; E; F; I; M; R, Divi- sion 1; and S Occupancies, rooms containing a boiler, central heating plant or hot-water supply boil- er shall be separated from the rest of the building by not less than a one-hour occupancy separation. EXCEPTIONS: I. In Groups A, B, E, F,1, M and S Occupancies, boilers, central healing plants or hot- water supply boilers where the largest piece of fuel equipment does not exceed 400,000 Btu per hour (1117.2 kw) input. 2. In Group R, Division I Occupancies, a separation need not be provided for such rooms will] equipment serving only one dwelling unit. In Group E Occupancies, when the opening for a heater or equipment room is protected by a pair of fire doors, the inactive leaf shall be normally secured in the closed position and shall be openable only by the use of a tool. An astragal shall be provided and the active leaf shall be self-closing. In Group H Occupancies, rooms containing a boiler, central heating plant or hot-water supply boiler shall be separated from the rest of the building by not less than a two-hour occupancy separa- tion. In Divisions I and 2, there shall be no openings in such occupancy separation except for neces- sary ducts and piping. For opening in exterior walls of equipment rooms in Groups A, E or I Occupancies, see Section 303.8. 302.6 Water Closet Room Separation. A room in which a water closet is located shall be sepa- rated from food preparation or storage rooms by a tight -fitting door. SECTION 303 — REQUIREMENTS FOR GROUP A OCCUPANCIES 303.1 General. 303.1.1 Group A Occupancies defined. Group A Occupancies include the use of a building or structure, or a portion thereof, for the gathering together of 50 or more persons for purposes such as civic, social or religious functions, recreation, education or instruction, food or drink consumption, or awaiting transportation. A room or space used for assembly purposes by less than 50 persons and accessory to another occupancy shall be included as it part of that major occupancy. Assembly occu- pancies shall include the following: Division 1. A building or portion of a building having an assembly room with an occupant load of 1,000 or more and a legitimate stage. Division 2. A building or portion of a building having an assembly room with an occupant load of less than 1,000 and a legitimate stage. Division 2.1. A building or portion of a building having an assembly room with an occupant load of 300 or more without a legitimate stage, including such buildings used for educational purposes and not classed as Group B or E Occupancies. Division 3. A building or portion of a building having an assembly room with an occupant load of 1 less than 300 without a legitimate stage, including such buildings used for educational purposes and not classed as Group B or E Occupancies. 1-26 011IN1U1[1 1994 UNIFORM BUILDING CODE SECTION 310 — REQUIREMENTS FOR GROUP R OCCUPANCIES 310.1 Group R Occupancies Defined. Group R Occupancies shall be: Division 1. hotels and apartment houses. Congregate residences (each accommodating more than 10 persons). Division 2. Not used. Division 3. Dwellings and lodging houses. Congregate residences (each accommodating 10 persons or less). For occupancy separations, see Table 3-13. A complete code for construction of detached one- and two-family dwellings is in Appendix Chapler 3, Division III, of this code. When adopted, as set forth in Section 101.3, it will take prece- dence over the other requirements set forth in Chapter 35 of this code. 310.2 Construction, Height and Allowable Area. 310.2.1 General. Buildings or parts of buildings classed in Group R because of the use or charac- ler of the occupancy shall be limited to the types of construction set forth in Table 5-13 and shall not exceed, in area or height, the limits specified in Sections 504, 505 and 506. 310.2.2 Special provisions. Walls and floors separating dwelling units in the same building, or guest rooms in Group R, Division I hotel occupancies, shall not be of less than one-hour fire-resis- live construction. Group R, Division I Occupancies more than two stories in height or having more than 3,000 square feet (279 m) of floor area above the first story shall not be of less than one-hour fire -resistive construction throughout except as provided in Section 601.5.2.2. Storage or laundry rooms that are within Group R, Division I Occupancies that are used in com- mon by tenants shall be separated from the rest of the building by not less than one-hour fire-resis- live occupancy separation. For Group R, Division I Occupancies with a Group S, Division 3 parking garage in the basement or first story, see Section 311.2.2. For attic space partitions and draft slops, see Section 708. 310.3 Location on Property. For fire -resistive protection of exterior walls and openings, as de- termined by location on property, see Section 503 and Chapter 6. 310.4 Access and Exit Facilities and Emergency Escapes. Exits shall be provided as specified in Chapter 10. (See also Section 1013 for exit markings.) Access to, and egress from, buildings required to be accessible shall be provided as specified in Chapter 11. Basements in dwelling units and every sleeping room below the fourth story shall have at least one operable window or door approved for emergency escape or rescue which shall open directly into a public street, public alley, yard or exit court. The emergency dooror window shall be operable from the inside to provide a full, clear opening without the use of separate tools. EXCEPTION: The window or door may open into an atrium complying with Section 402 provided the window or door opens onto an exit balcony and the dwelling unit or guest room has an exit which does not open into lhC alriun7. Escape or rescue windows shall have a minimum net clear openable area of 5.7 square feel (0.53 1112). The minimum net clear openable height dimension shall be 24 inches (610 nun). The mini- mum net clearopenable width dimension shall be 20 inches (508 nun). When windows are provided as a means of escape or rescue, they shall have a finished sill height not more than 44 inches (1118 nun) above the floor. 1-48 310.7-310.9.2 1994 UNIFORM BUILDING CODE 4. The unit shall be provided with a separate bathroom containing a water closet, lavatory and bathtub or shower. 310.8 Shaft and Exit Enclosures. Exits shall be enclosed as specified in Chapter 10. Elevator shafts, vent shafts, dumbwaiter shafts, clothes chutes and other vertical openings shall be enclosed and the enclosure shall be as specified in Section 711. In nonsprinklered Group R, Division 1 Occupancies, corridors serving an occupant load of 10 or more shall be separated from corridors and other areas on adjacent floors by not less than approved fixed wired glass set in steel frames or by 20 -minute smoke- and draft -control assemblies which are automatic closing by smoke detection. 310.9 Smoke Detectors and Sprinkler Systems. 310.9.1 Smoke detectors. 310.9.1.1 General. Dwelling units, congregate residences and hotel or lodging house guest rooms that are used for sleeping proposes shall be provided with smoke detectors. Detectors shall be installed in accordance with the approved manufacturer's instructions. 310.9.1.2 Additions, alterations or repairs to Group R Occupancies. When the valuation of an addition, alteration or repair to a Group R Occupancy exceeds $1,000 and a permit is required, or when one or more sleeping rooms are added or created in existing Group R Occupancies, smoke detectors shall be installed in accordance with Sections 310.9.1.3, 310.9.1.4 and 310.9.1.5 of this section. I EXCEPTION: Repairs to the exterior surfaces of a Group R Occupancy are exempt from the require- ments of this section. 310.9.1.3 Power source. In new construction, required smoke detectors shall receive their pri- mary power from the building wiring when such wiring is served from a commercial source and shall be equipped with a battery backup. The detector shall emit a signal when the batteries are low. Wiring shall be permanent and without a disconnecting switch other than those required for over - current protection. Smoke detectors may be solely battery operated when installed in existing buildings; or in buildings without commercial power; or in buildings which undergo alterations, repairs or additions regulated by Section 310.9.1.2. 310.9.1.4 Location within dwelling units. In dwelling units, a detector shall be installed in each sleeping room and at a point centrally located in the corridor or area giving access to each separate sleeping area. When the dwelling unit has more than one story and in dwellings with basements, a detector shall be installed on each story and in the basement. In dwelling units where a story or base- ment is split into two or more levels, the smoke detector shall be installed on the upper level, except that when the lower level contains a sleeping area, a detector shall be installed on each level. When sleeping rooms are on an upper level, the detector shall be placed at the ceiling of the upper level in close proximity to the stairway. In dwelling units where the ceiling height of a room open to the hallway serving the bedrooms exceeds that of the hallway by 24 inches (6 10 mm) or more, smoke detectors shall be installed in the hallway and in the adjacent room. Detectors shall sound an alarm audible in all sleeping areas of the dwelling unit in which they are located. 310.9.1.5 Location in efficiency dwelling units, congregate residences and hotels. In efficien- cy dwelling units, hotel suites and in hotel and congregate residence sleeping rooms, detectors shall be located on the ceiling or wall of the main room or each sleeping room. When sleeping rooms within an efficiency dwelling unit or hotel suite are on an upper level, file detector shall be placed at the ceiling of the upper level in close proximity to the stairway. When actuated, the detector shall ' sound an alarm audible within the sleeping area of the dwelling unit or congregate residence, hotel suite, or sleeping room in which it is located. 310.9.2 Sprinkler and standpipe systems. When required by Section 904.2.1 or other provi- sions of this code, automatic sprinkler systems and standpipes shall be designed and installed as specified in Chapter 9. 1-50 1994 UNIFORM BUILDING CODE 310.10-311.1 310.10 Fire Alai -in Systems. Group R, Division 1 Occupancies shall be provided with an ap- proved manual and automatic fire alarm system in apartment houses three or more stories in height or containing 16 or more dwelling units, in hotels three or more stories in height or containing 20 or more guest rooms and in congregate residences three or more stories in height or having an occu- pant load of 20 or more. A fire alarm and communication system shall be provided in Group R, Division I Occupancies located in a high-rise building. EXCEPTIONS: I. A manual fire alann system need not be provided in buildings not over two stories in height when all individual dwelling units and contiguous altic and crawl spaces are separated from each other and public or common areas by at least one-hour fire -resistive occupancy separations and each individual dwelling unit or guest room has an exit directly to a public way, exit court or yard. 2. A separate fire alarm system need not be provided in buildings which are protected throughout by an approved supervised fire sprinkler system having it local alarm to notify all occupants. 'Phe local alarm shall provide an alarm signal with a sound pressure level of 15 dBA above the average ambient sound level in every occupied space within the building. The minimum sound pressure level shall be 70 dBA. The maximum sound pressure level for audible alarm -indicating appliances shall not exceed 110 dBA at the minimum hearing distance from the audible appliance. For the purposes of this section, area separation walls shall not define separate buildings. 310.11 Heating. Dwelling unit%, guest rooms and congregate residences shall be provided with heating facilities capable of maintaining a room temperature of 70°F. (2VC.) at a point 3 feet (914 mm) above the floor in all habitable rooms. 310.12 Special Hazards. Chimneys and healing apparatus shall conform to the requirements of Chapter 31 and the Mechanical Code. The storage, use and handling of flammable and combustible liquids in Division I Occupancies shall be in accordance with the Fire Code. In Division I Occupancies, doors leading into rooms in which Class 1 flammable liquids are stored or used shall be protected by a fire assembly having a one-hour fire -protection rating. Such fire assembly shall be self-closing and shall be posted with a sign on each side of the door in 1 -inch (25.4 tum) block letters stating: FIRE DOOR—KEEP CLOSED. SECTION 311 — REQUIREMENTS FOR GROUP S OCCUPANCIES 311.1 Group S Occupancies Defined. Group S Occupancies shall include the use of a building or structure, or a portion thereof, for storage not classified as a hazardous occupancy. Storage occu- pancies shall include the following: Division 1. Moderate hazard storage occupancies shall include buildings or portions of buildings used for storage of combustible materials that are not classified as a Group S, Division 2 or as a Group H Occupancy. Division 2. Low -hazard storage occupancies shall include buildings, structures, or portions thereof, used for storage of noncombustible materials, such as products on wood pallets or in paper cartons with or without single -thickness divisions, or in paper wrappings and shall include ice plants, power plants and pumping plants. Such products may have a negligible amount of plastic trim such as knobs, handles or film wrapping. Low -hazard storage occupancies shall include, but are not limited to, storage of the following items: L Beer or wine (in metal, glass or ceramic containers). 2. Cement in bags. 3. Cold storage and creameries. 4. Dairy products in nonwax-coated paper containers. 5. Dry -cell batteries. 1-51 F F F F F F F F F F F F F F F F F F F 407-408 UNIFORM BUILDING CODE FAMILY is an individual or two or more persons related by blood or marriage or a group of not more than five persons (excluding servants) who need not be related by blood or marriage living together in a dwelling unit. FIRE ASSEMBLY. See Section 4306 (b). FIRE CODE is the Uniform Fire Code promulgated jointly by the Western Fire Chiefs Association and the International Conference of Building Officials, as adopted by this jurisdiction. FIRE RESISTANCE or FIRE -RESISTIVE CONSTRUCTION is con- struction to resist the spread of fire, details of which are specified in this code. FIRE -RETARDANT TREATED WOOD is lumber or plywood impregnated with chemicals and which, when tested in accordance with U.B.C. Standard No. 42-1 for a period of 30 minutes, shall have a flame spread of not over 25 and show no evidence of progressive combustion. Materials which may be exposed to the weather shall maintain this fire -retardant classification when tested in accordance with the rain and weathering tests of U.B.C. Standard No. 32-7. All materials shall bear identification showing the fire performance rating thereof and, if intended for exterior use, shall be further identified to indicate suitability for exposure to the weather. Such identifications shall be issued by an approved agency having a service for inspection of materials at the factory. FLAMMABLE LIQUID. See Fire Code. FLOOR AREA is the area included within the surrounding exterior walls of a building or portion thereof, exclusive of vent shafts and courts. The floor area of a building, or portion thereof, not provided with surrounding exterior walls shall be the usable area under the horizontal projection of the roof or floor above. FOOTING is that portion of the foundation of a structure which spreads and transmits loads directly to the soil or the piles. FRONT OF LOT is the front boundary line of a lot bordering on the street and, in the case of a corner lot, may be either frontage. G Sec. 408. GARAGE is a building or portion thereof in which a motor vehicle containing flammable or combustible liquids or gas in its tank is stored, repaired or kept. GARAGE, PRIVATE, is a building or a portion of a building, not more than 1000 square feet in area, in which only motor vehicles used by the tenants of the building or buildings on the premises are stored or kept. (See Section 1101.) GARAGE, PUBLIC, is any garage other than a private garage. GRADE (Adjacent Ground Elevation) is the lowest point of elevation of the finished surface of the ground, paving or sidewalk within the area between the building and the property line or, when the property line is more than 5 feet from the building, between the building and a line 5 feet from the building. GRADE (Lumber) is the classification of lumber in regard to strength and utility. 20 417-420 UNIFORM BUILDING CODE greater than 75 when tested in the thickness intended for use by U. B.C. Standard No. 52-2. Approved plastics shall be classified as either CCI or CC2, in accord- ance with U.B.C. Standard No. 52-4. PLATFORM. See Chapter 39. PLUMBING CODE is the Uniform Plumbing Code promulgated by the International Association of Plumbing and Mechanical Officials as adopted by this jurisdiction. PUBLIC WAY. See Section 3301 (b). Q See. 418. No definitions. R Sec. 419. REPAIR is the reconstruction or renewal of any part of an existing building for the purpose of its maintenance. S Sec. 420. SERVICE CORRIDOR is a fully enclosed passage used for " trans- -poses other than required exiting. HPM and for put SHAFT is a vertical opening through a building for elevators, dumbwaiters, mechanical equipment or similar purposes. SHALL, as used in this code, is mandatory. SMOKE DETECTOR is an approved detector which senses visible or invisi- ble particles of combustion. The detector shall bear a label or other identification issued by an approved testing agency having a service for inspection of materials and workmanship at the factory during fabrication and assembly. STAGE See Chapter 39. STORY is that portion of a building included between the upper surface of any floor and the upper surface of the floor next above, except that the topmost story shall be that portion of a building included between the tipper surface of the topmost floor and the ceiling or roof above. If the finished floor level directly above a usable or unused under -floor space is more than 6 feet above grade as defined herein for more than 50 percent of the total perimeter or is more than 12 feet above grade as defined herein at any point, such usable or unused under -floor space shall be considered as a story. STORY, FIRST, is the lowest story in a building which qualifies as a story, as defined herein, except that a floor level in a building having only one floor level shall be classified as a first story, provided such floor level is not more than 4 feet _ below grade, as defined herein, for more than 50 percent of the total perimeter, or not more than 8 feet below grade, as defined herein, at any point. STREET is any thoroughfare or public way not less than 16 feet in width which has been dedicated or deeded to the public for public use. STRUCTURE is that which is built or constructed, an edifice or building of any kind, or any piece of work artificially built up or composed of parts joined together in some definite manner. 24 504-505 UNIFORM BUILDING CODE 2. A point one third the distance from an assumed vertical plane located where fire -resistive protection of openings is first required due to location on property, whichever is the least restrictive. When openings in exterior walls are required to be protected due to distance from property line, the sum of the area of such openings shall not exceed 50 percent of the total area of the wall in each story. (c) Buildings on Same Property and Buildings Containing Courts. For the purposes of determining the required wall and opening protection and roof - covering requirements, buildings on the same property and court walls of build- ings over one story in height shall be assumed to have a property line between them. EXCEPTION: In court walls where opening protection is required such protec- tion may be omitted, provided (1) not more than two levels open into the court, (2) the aggregate area of the building including the court is within the allowable area and (3) the building is not classified as a Group I Occupancy. When a new building is to be erected on the same property as an existing building, the location of the assumed property line with relation to the existing I building shall be such that the exterior wall and opening protection of the existing building meet the criteria as set forth in Table No. 5-A and Part IV. EXCEPTION: Two or more buildings on the same property may be considered as portions of one building if the aggregate area of such buildings is within the limits specified in Section 505 for a single building. When the buildings so considered house different occupancies or are of different types of construction, the area shall be that allowed for the most restricted occupancy or construction. Allowable Floor Areas See. 505. (a) One-story Areas. The area of a one-story building shall not exceed the limits set forth in Table No. 5-C except as provided in Section 506. (b) Areas of Buildings Over One Story. The total combined floor area for multistory buildings may be twice that permitted by Table No. 5-C for one-story buildings, and the floor area of any single story shall not exceed that permitted for a one-story building. (c) Mezzanines. Unless considered as a separate story, the floor area of all mezzanines shall be included in calculating the allowable floor area of the stories in which the mezzanines are located. (d) Basements. A basement need not be included in the total allowable area, provided such basement does not exceed the area permitted for a one-story building. (e) Area Separation Walls. Each portion of a building separated by one or more area separation walls may be considered a separate building, provided the area separation walls meet the following requirements: 1. Area separation walls shall be not less than four-hour fire -resistive construc- tion in Types I, II -ER., III and IV buildings and two-hour fire -resistive construc- tion in Types II One-hour, lI-N or V buildings. The total width of all openings in such walls shall not exceed 25 percent of the length of the wall in each story. All 30 1985 EDITION 505 i openings shall be protected by afire assembly having a three-hour fire -protection rating in four-hour fire -resistive walls and one and one -half-hour fire -protection rating in two-hour fire -resistive walls. 2. Area separation walls shall extend to the outer edges of horizontal projecting elements such as balconies, roof overhangs, canopies, marquees or architectural projections. EXCEPTION: When horizontal projecting elements do not contain concealed spaces, the area separation wall may terminate at the exterior wall. When the horizontal projecting elements contain concealed spaces, the area separation wall need only extend through the concealed space to the outer edges of the projecting elements. The exterior walls and the projecting elements above shall be of not less than one- hour fire -resistive construction for a distance not less than the depth of the projecting elements on both sides of the area separation wall. Openings within such widths shall be protected by fire assemblies having a fire -protection rating of not less than three- fourths hour. 3. Area separation walls shall extend from the foundation to a point at least 30 cinches above the roof. — EXCEPTIONS: 1. Area separation walls may terminate at the underside of the roof sheathing, deck or slab, provided the roof -ceiling assembly is of at least two- hour fire -resistive construction. 2. Two-hour area separation walls may terminate at the underside of the roof sheathing, deck or slab, provided: A. Where the roof -ceiling framing elements are parallel to the walls, such framing and elements supporting such framing shall be of not less than one-hour fire - resistive construction for a width of not less than 5 feet on each side of the wall. B. Where roof -ceiling framing elements are perpendicular to the wall, the entire span of such framing and elements supporting such framing shall be of not less than one-hour fire -resistive construction. C. Openings in the roof shall not be located within 5 feet of the area separation wall. D. The entire building shall be provided with a fire -retardant roof covering or y special purpose roof complying with Section 3203 (g). 3. Two-hour area separation walls may terminate at roofs of entirely noncombusti- ble construction. 4. Parapets of area separation walls shall have noncombustible faces for the uppermost 18 inches, including counterflashing and coping materials. t3 5. Where an area separation wall separates portions of a building having different heights, such wall may terminate at a point 30 inches above the lower roof level, provided the exterior wall for a height of 10 feet above the lower roof is of one-hour fire -resistive construction with openings protected by assemblies having a three -fourths -hour fire -protection rating. EXCEPTION: The area separation wall may terminate at the underside of the roof sheathing, deck or slab of the lower roof, provided: A. Where the roof -ceiling framing elements are parallel to the wall, such framing and elements supporting such framing shall be of not less than one-hour fire - resistive construction for a width of 10 feet along the wall at the lower roof. 31 1991 UNIFORM BUILDING CODE 505 than the basic area permitted in the occupancy by Table No. 5-C for such minor f uses, for the purpose of determining allowable area, the major use of the building shall determine the occupancy classification, provided the uses are separated as specified in Section 503 (d). 9 (d) Mezzanines. Unless considered as a separate story, the floor area of all mez- zanines shall be included in calculating the allowable Floor area of the stories in which the mezzanines are located. (e) Basements. Abasement need not be included in the total allowable area, pro- vided such basement does not exceed the area permitted for a one-story building. (f) Area Separation Walls. 1.General. Each portionof abuilding separatedby oneormoreareaseparationwalls whichcomplywiththeprovisionsofthissubsec- tion may be considered a separate building. The extent and location of such area separation walls shall provided a complete separation. Ki When an area separation wall also separates occupancies that are required to be0. separated by an occupancy separation, the most restrictive requirements of each ?; separation shall apply. 2. Fire -resistance. Area separation walls shall not be of less than four-hour k: fire -resistive construction in Types I, II -ER., III and IV buildings and two-hour fire -resistive construction in Type II One-hour, 11-N or V buildings. The total width of all openings in such walls shall not exceed 25 percent of the length of the wall in each story. All openings shall be protected by a fire assembly having a three-hour fire -protection rating in four-hour fire -resistive walls and one- and one -half-hour fire -protection rating in two-hour fire -resistive walls. 3. Extensions beyond exterior walls. Area separation walls shall extend to the outer edges of horizontal projecting elements such as balconies, roof overhangs, canopies, marquees or architectural projections. EXCEPTION: When horizontal projecting elements do not contain concealed spaces, the area separation wall may terminate at the exterior wall. When the horizontal projecting elements contain concealed spaces, the area sepa- ration wall need only extend through the concealed space to the outer edges of the projecting elements. i The exterior walls and the projecting elements above shall not be of less than one-hour fire -resistive construction for a distance not less than the depth of the proj- ecting elements on both sides of the area separation wall. Openings within such widths shall be protected by fire assemblies having a fire -protection rating of not less than Three-fourths hour. 4. Terminaling. Area separation walls shall extend from the foundation to a point at least 30 inches above the roof. EXCEPTIONS: 1. Area separation walls may terminate at the underside of the roof sheathing, deck or slab, provided the roof -ceiling assembly is of at least two- hour fire -resistive construction. 2. Two-hour area separation walls may terminate at the underside of the roof sheathing, deck or slab, provided: A. Where the roof -ceiling framing elements are parallel to the walls, such fram- ing and elements supporting such training shall not be of less than one-hour 39 505-506 1991 UNIFORM BUILDING CODE fire -resistive construction for a width of not less than 5 feet on each side of the wall. B. Where roof -ceiling training elements are perpendicular to the wall, the entire span of such framing and elements supporting such framing shall not be of l.. less than one-hour fire -resistive construction. C. Openings in the roof shall not be located within 5 feet of the area separation wall. D. The entire building shall be provided with not less than a Class B roofing. 3. Two-hour area separation walls may terminate at the underside of noncombus- tible roof sheathing, deck or slab of roofs of noncombustible construction provided: " A. Openings in the roof are not located within 5 feet of the area separation wall. B. The entire building is provided with not less than a Class B roofing. 5. Parapet faces. Parapets of area separation walls shall have noncombustible faces for the uppermost 18 inches, including counterflashing and coping materials. 6. Buildings of different heights. Where an area separation wall separates por- tions of a building having different heights, such wall may terminate at a point 30 inches above the lower roof level, provided the exterior wall for a height of 10 feet above the lower roof is of one-hour fire -resistive construction with openings pro- tected by assemblies having a three -fourths -hour fire -protection rating. EXCEPTION: The area separation wall may terminate at the underside of the roof sheathing, deck or slab of the lower roof, provided: A. Where the roof -ceiling framing elements are parallel to the wall, such framing and elements supporting such framing shall not be of less than one-hour fire -resistive construction for a width of 10 feet along the wall at the lower roof. B. Where the lower roof -ceiling framing elements are perpendicularto the wall, the entire span of such framing and elements supporting such framing shall not be of less than one-hour fire -resistive construction. C. Openings in the lower roof shall not be located within 10 feet of the area sepa- ration wall. See Chapters 6 through 12 for special occupancy provisions. Allowable Area Increases Sec. 506. (a) General. The floor areas specified in Section 505 maybe increased by one of the following: 1. Separation on two sides. Where public ways or yards more than 20 feet in width extend along and adjoin two sides of the building, floor areas may be in- creased at a rate of 11/4 percent for each foot by which the minimum width exceeds 20 feet, but the increase shall not exceed 50 percent. 2. Separation on three sides. Where public ways or yards more than 20 feet in width extend along and adjoin three sides of the building, floor areas may be in- creased at a rate of 21/2 percent for each foot by which the minimum width exceeds 20 feet, but the increase shall not exceed 100 percent. 3. Separation on all sides. Where public ways or yards more than 20 feet in width extend on all sides of a building and adjoin the entire perimeter, floor areas may be increased at a rate of 5 percent for each foot by which the minimum ex - 40 I -. 1991 UNIFORM BUILDING CODE 505 than the basic area permitted in the occupancy by Table No. 5-C for such minor uses, for the purpose of determining allowable area, the major use of the building shall determine the occupancy classification, provided the uses are separated as specified in Section 503 (d). fv (d) Mezzanines. Unless considered as a separate story, the floor area of all mez- zanines shall be included in calculating the allowable floor area of the stories in which the mezzanines are located. (e) Basements. A basement need not be i ncluded in the total allowable area, pro- vided such basement does not exceed the area permitted for a one-story building. (t) Area Separation Walls. 1. General. Each portion of a building separated by one or more area separation walls whichcomply with the provisions of this subsec- tion may be considered a separate building. The extent and location of such area separation walls shall provided a complete separation. When an area separation wall also separates occupancies that are required to be R separated by an occupancy separation, the most restrictive requirements of each $ separation shall apply. 2. Fire -resistance. Area separation walls shall not be of less than four-hour fire -resistive construction in Types 1, II-F.R., III and IV buildings and two-hour fire -resistive construction in Type II One-hour, lI-N or V buildings. The total width of all openings in such walls shall not exceed 25 percent of the length of the wall in each story. All openings shall be protected by a fire assembly having a three-hour fire -protection rating in four-hour fire -resistive walls and one- and one -half-hour fire -protection rating in two-hour fire -resistive walls. 3. Extensions beyond exterior walls. Area separation walls shall extend to the outer edges of horizontal projecting elements such as balconies, roof overhangs, canopies, marquees or architectural projections. EXCEPTION: When horizontal projecting elements do not contain concealed spaces, the area separation wall may terminate at the exterior wall. When the horizontal projecting elements contain concealed spaces, the area sepa- ration wall need only extend through the concealed space to the outer edges of the projecting elements. The exterior walls and the projecting elements above shall not be of less than one-hour fire -resistive construction for a distance not less than the depth of the proj- ecting elements on both sides of the area separation wall. Openings within such widths shall be protected by fire assemblies having a fire -protection rating of not less than three-fourths hour. 4. Terminating. Area separation walls shall extend from the foundation to a point at least 30 inches above the roof. EXCEPTIONS: I. Area separation walls may terminate at the underside of the i roof sheathing, deck or slab, provided the roof -ceiling assembly is of at least two- hour fire -resistive construction. 2. Two-hour area separation walls may terminate at the underside of the roof sheathing, deck or slab, provided: A. Where the roof -ceiling framing elements are parallel to the walls, such train- ing and elements supporting such framing shall not be of less than one-hour 39 509.1-509.3 1994 UNIFORM BUILDING CODE EXCEPTION: Guardrails need not be provided at the following locations: I. On the loading side of loading docks. 2. On the auditorium side of a stage, raised platforms and other raised floor areas such as runways, ramps I and side stages used for entertainment or presentation. Along the side of an elevated walking surface when used for the normal functioning of special lighting or for access and use of other special equipment. At vertical openings in the performance area of stages. 3. Along vehicle service pits not accessible to the public. 509.2 height. The top of guardrails shall not be less than 42 inches (1067 mm) in height. ' EXCEPTIONS: I. The top of guardrails for Group R, Division 3 and Group M, Division 1 Occupancies and interior guardrails within individual dwelling units, Group R, Division 3 congregate residences and guest rooms of Group R, Division 1 Occupancies may be 36 inches (914 min) in height. 2. The top of guardrails on a balcony immediately in front of the first row of fixed seats and which are not at the end of an aisle may be 26 inches (660 mm) in height. 3. The top of guardrails for stairways, exclusive of their landings, may have a height as specified in Section 1006.9 for handrails. 509.3 Openings. Open guardrails shall have intermediate rails or an ornamental pattern such that -- a sphere 4 inches (102 mm) in diameter cannot pass through. EXCEPTIONS: I. The open space between the intermediate rails or ornamental pattern of guardrails in areas of commercial and industrial -type occupancies which are not accessible to the public may be such that a sphere 12 inches (305 nim) in diameter cannot pass through. 2. The triangular openings formed by the riser, tread and bottom element of a guardrail at the open side of a stairway may be of such size that a sphere 6 inches (152 min) in diameter cannot pass through. For guardrail requirements at grandstands, bleachers or other elevated seating facilities, see Sec- tion 1021.5.7. - 1-90 708.2.2-708.4 1994 UNIFORM BUILDING CODE Walls having parallel or staggered studs for sound -transmission control shall have fire blocks of mineral fiber or glass fiber or other approved nonrigid materials. 708.3 Draft Slops. _ 708.3.1 Where required. Draftstopping shall be provided in the locations set forth in this section 708.3.1.1 Floor -ceiling assemblies. 708.3.1.1.1 Single-family rlvvellings. When there is usable space above and below the concealed space of a floor -ceiling assembly in a single-family dwelling, draft slops shall be installed so that the area of the concealed space does not exceed 1,000 square feet (93 m2). Draftstopping shall di- . vide the concealed space into approximately equal areas. 708.3.1.1.2 Two or more dwelling units and hotels. Draft stops shall be installed in floor -ceiling assemblies of buildings having more than one dwelling unit and in hotels. Such draft stops shall be in line with walls separating individual dwelling units and guest rooms from each other and from other areas. 708.3.1.1.3 Other uses. Draft stops shall be installed in floor -ceiling assemblies of buildings or portions of buildings used for other than dwelling or hotel occupancies so that the area of the con- cealed space does not exceed 1,000 square feet (93 in) and so that the horizontal dimension be- tween stops does not exceed 60 feet (I8 288 turn). EXCEPTION: Where approved automatic sprinklers are installed within the concealed space, the area between draft slops may be 3,000 square feet (279 m2) and the horizontal dimension may be 100 feet (30 480 Mill). 708.3.1.2 Attics. 708.3.1.2.1 Two or more dwelling units and hotels. Draft stops shall be installed in the attics, _ mansards, overhangs, false fronts set out from walls and similar concealed spaces of buildings con- taining more than one dwelling unit and in hotels. Such draft stops shall be above and in line with the walls separating individual dwelling units and guest rooms from each other and from other uses. EXCEPTIONS: I. Draft stops may be omitted along one of the corridor walls, provided draft stops at walls separating individual dwelling units and guest rooms from each other and from other uses, extend to the remaining corridor draft stop. 2. Where approved sprinklers are installed, draftstopping may be as specified in the exception to Section 708.3.1.2.2 below. 708.3.1.2.2 Other uses. Draft stops shall be installed in attics, mansards, overhangs, false fronts set out from walls and similar concealed spaces of buildings having uses other than dwellings or hotels so that the area between draft stops does not exceed 3,000 square feet (279 1112) and the great- est horizontal dimension does not exceed 60 feet (18 288 nun). EXCEPTION: Where approved automatic sprinklers are installed, the area between draft stops may be 9,000 square feet (836 m2) and the greatest horizontal distension may be 100 feet (30 480 mm). 708.3.1.3 Draft sto1 construction. Draftstopping materials shall not be less than 1/2 -inch (12.7 ' iron) gypsum board,/8-inch (9.5 mm) wood structural panel, 3/8 -inch (9.5 nim) Type 2-M particle- board or other approved materials adequately supported. Openings in the partitions shall be protected by self-closing doors with automatic latches con- structed as required for the partitions. Ventilation of concealed roof spaces shall be maintained in accordance with Section 1505. 708.4 Draft Stops or Fire Blocks in Other Locations. Fireblocking of veneer on noncombus- tible walls shall be in accordance with Section 708.2.1, Item 1, above. For fireblocking ceilings applied against noncombustible construction, see Section 803, Iteni 1. 1-114 1002.1.2-1003.1 1994 UNIFORM BUILDING CODE k The occupant load for buildings or areas containing two or more occupancies shall be determined by adding the occupant loads of the various use areas as computed in accordance with file applicable provisions of [his section. 1002.1.3 Fixed seating. For areas having fixed seats and aisles, the occupant load shall be deter - aimed by the number of fixed seats installed therein. The required width of aisles serving fixed seats shall not be use(] for any other purpose. For areas having fixed benches or pews, the occupant load) shall not be less than the number of seats based on one person for each 18 inches (457 111m)'of length of pew or bench. Where booths are used in dining areas, the occupant load shall be based on one person for each 24 inches (610 nun) of booth length or major portion thereof. 1002.1.4 Reviewing stands, grandstands and bleachers. The occupant load for reviewing stands, grandstands and bleachers steal I be calculated in accordance with this section and the specif- ic requirements contained in Section 1021. 1002.2 Maximum Occupant load. 1002.2.1 Assembly occupancies. The maximmn occupant load for assembly occupancies shall not exceed the occupant load determined in accordance with Section 1002.1. EXCEPTION: When approved by the building official, the occupant load for an assembly occupancy may be increased provided the maximum occupant load served does not exceed the capacity of the exit system for such increased number of persons. The building official may require an aisle, seating or fixed equipment (no - grain to substantiate such an increase, and may require that such diagram be posted. 1002.2.2 Other occupancies. For other than assembly occupancies, an occupant load greater than that determined in accordance with Section 1002.1 is permitted; however, the exit system shall comply with the provisions of this chapter for such increased number of persons. 1002.3 Postingof Room Capacity. Any room having an occupant load of 50 or more where fixed seals are not instal led, and which is used for assembly purpose, shall have (he capacity of the room posted in a conspicuous place on an approved sign near the main exit from the room. Such signs shall be maintained legible by the owner or the owner's authorized agent and shall indicate [he num- . her of occupants permitted for each room use. 1002.4 Revised Occupant Load. After a building is occupied, any change in use or increase in occupant load shall comply with this chapter. See Section 3405, - - SECTION 1003 — EXITS REQUIRED 1003.1 Number of Exits. Every building or usable portion thereof shall have at least one exit, not less than two exits where required by Table 10-A and additional exits as required by this section. For purposes of [his section, basements and occupied roofs shall be provided with exits as re- quired for stories. EXCEPTION: Occupied roofs on Group R, Division 3 Occupancies may have one exit if such occupied areas are less than 500 square feel (46.45 in ) and are located no higher than immediately above the second story. Floors complying with the provisions for mezzanines as specified in Section 506, Exception 3, shall be provided with exits as specified therein. Occupants on stories above the first and in basements shall have access to not less fl nn two sepa- rate exits from the story or basement. EXCEPTIONS: 1. Second stories having an occupant load less than 10 may be provided will) only one exit. 2. Two or more dwelling units on the second story or in a basement may have access to only one common exit when the total occupant load served by that exit does not exceed 10. 1-174 ,I 1994 UNIFORM BUILDING CODE 1004.9-1005.2 access is not required, such dimension shall not exceed 1 inch (25 min). Landings shall be level except for exterior landings, which may have a slope not to exceed 1/4 unit vertical in 12 units hori- zontal (2% slope). EXCEPTIONS: I. In Group R, Division 3, and Group U Occupancies and within individual units of ' Group R, Division I Occupancies: 1.1 A door may open at the lop step of in interior flight of stairs, provided the door does not swing over the top step. 1.2 A door may open at a landing that is not more than 8 inches (203 mm) lower than the floor level, provided the door does not swing over the handing. 1.3 Screen doors and storm doors may swing over stairs, steps or landings. 2. Doors serving building equipment roonis,which are not normally occupied. 1004.10 Landings at Doors. Landings shall have a width not less than the width of the stairway or the width of the door, whichever is the greater. Doors in the fully open position shall not reduce a required dimension by more than 7 inches (178 min). When a landing serves an occupant load of 50 or more, doors in any position shall not reduce the landing dimension to less than one half its re- quired width. Landings shall have a length measured in the direction of travel of not less than 44 inches (1 l l8 min). EXCEPTION: In Group R, Division 3, and Group U Occupancies and within individual units of Group ' R, Division I Occupancies, such length need not exceed 36 inches (914 min). A landing which has no adjoining door shall comply with Section 1006.7. 1004.11 Door Identification. Glass doors shall conform to the requirements specified in Section 2406. Exit doors shall be marked so that they are readily distinguishable from the adjacent construction. 1004.12 Additional Doors. When additional doors are provided for egress purposes, they shall conform to all provisions of this chapter. EXCEPTION: Approved revolving doors having leaves which will collapse under opposing pressures may be used in exit situations, provided: 1. Such doors have a minimum width of 6 feet 6 inches (1981 nun). 2. At least one conforming exit door is located adjacent to each revolving door. 3. The revolving door shall not be considered to provide any exit width. SECTION 1005 — CORRIDORS AND EXTERIOR EXIT BALCONIES 1005.1 General. This section shall apply to every corridor serving as a required exit for an occu- pant load of 10 or more except that Section 1005.2 shall apply to all corridors. For the purpose of this section, the term "corridor" shall include exterior exit balconies and covered or enclosed walk- I ways, tunnels and malls. Partitions, rails, counters and similar space dividers not over 5 feet 9 inches (1753 mm) in height above the floor shall not be construed to form corridors. Exit corridors shall not be interrupted by intervening rooms. EXCEPTION: Foyers, lobbies or reception rooms constructed as required for corridors shall not be con- strued as intervening rooms. Corridors which are located within an accessible route of travel shall also comply with Chapter 11. For Group I Occupancies see Section 1019.3. 1005.2 Width. The minimum corridor width shall be determined as specified in Section 1003.2, but shall not be less than 44 inches (1118 mm), except as specified herein. Corridors serving an oc- cupant load of 49 or less shall not be less than 36 inches (914 min) in width. Forspecial requirements for Groups E and I Occupancies, see Sections 1017 and 1019. 1-179 1005.3-1005.8.1 1994 UNIFORM BUILDING CODE 1005.3 Height. Corridors and exterior exit balconies shall have a clear height of not less than 7 feet (2134 min) measured to the lowest projection from the ceiling. 1005.4 Projections. The required width of corridors shall be unobstructed. EXCEPTION: Handrails and doors, when fully opened, shall not reduce the required width by more than 7 incites (178 min). Doors in any position shall not reduce the required width by more than one half. Other nonstructural projections such as trim and similar decorative features may project into the required width 11/2 inches (38 min) on each side. 1005.5 Access to Exits. When more than one exit is required, they shall be so arranged that it is possible to go in either direction from any point in a corridor to a separate exit, except for dead ends not exceeding 20 feet (6096 mm) in length. 1005.6 Changes in Elevation. When a corridor or exterior exit balcony is accessible to the handi- capped, changes in elevation of the floor shall be made by means of a ramp, except as provided for doors by Section 1004.9. 1005.7 Construction. Walls of corridors serving a Group R, Division 1 or Group I Occupancy having an occupant load of 10 or more and walls of corridors serving other occupancies having an occupant load of 30 or more shall be of not less than one-hour fire -resistive construction and the ceilings shall not be less than that required for a one-hour fire -resistive floor or roof system. EXCEPTIONS: 1. One-story buildings housing Group S, Division 2 Occupancies. 2. Corridors more than 30 feet (9144 min) in width where occupancies served by such corridors have at least one exit independent from the corridor. (See Chapter 4 for covered malls.) 3. Exterior sides of exterior exit balconies. 4. In Group 1, Division 3 Occupancies such as jails, prisons, reformatories and similar buildings with open -barred cells forming corridor walls, the corridors and cell doors need not be fire resistive. 5. Corridor walls and ceilings need not be of fire -resistive construction within office spaces having an occupant load of 100 or less when the entire story in which the space is located is equipped with an automatic sprinkler system throughout and an automatic smoke -detection system installed within the corridor. The aclua- lion of any detector shall activate alarms audible in all areas served by the corridor. 6. In other than Type I or Il construction, exterior exit balcony roof assemblies may be of heavy -limber construction without concealed spaces. 7. Within office spaces occupied by a single tenant, partial height partitions which form corridors and which do not exceed 6 feet (1829 mm) in height need not be fire resistive, provided they are constructed in accordance with Section 601.5 and are not more than three fourths of the floor -to -ceiling height. 8. Corridor wal Is and ceilings need not be of fire -resistive construction within office spaces having an occu- pant load of 100 or less when the building in which the space is located is equipped with an automatic sprinkler system throughout. When the ceiling of the entire story is an element of a one-hour fire -resistive floor or roof system, the corridor walls may terminate at the ceiling. When the room -side fire -resistive membrane of the corridor wall is carried through to the underside of a fire -resistive floor or roof above, the corridor side of the ceiling may be protected by the use of ceiling materials as required for one-hour floor or roof system construction or the corridor ceiling may be of the same construction as the corridor walls. Ceilings of noncombustible construction may be suspended below the fire -resistive ceiling. For wall and ceiling finish requirements, see Table 8-B. For restrictions on the use of corridors to convey air, see Chapter 10 of the Mechanical Code. 1005.8 Openings. 1005.8.1 Doors. When corridor walls are required to be of one-hour fire -resistive construction by Section 1005.7, every interior door opening shall be protected by a tight -fitting smoke- and draft -control assembly having a fire -protection rating of not less than 20 minutes when tested in accordance with U.B.C. Standard 7-2. Said doors shall not have louvers. The door and frame shall 1-180 1991 UNIFORM BUILDING CODE 1201-1204 Chapter 12 REQUIREMENTS FOR GROUP R OCCUPANCIES Group R Occupancies Defined Sec. 1201. Group R Occupancies shall be: Division 1. Hotels and apartment houses. Congregate residences (each accommodating more than 10 persons). Division 2. Not used. Division 3. Dwellings and lodging houses. Congregate residences (each accommodating 10 persons or less). For occupancy separations, see Table No. 5-B. z;. A complete code for construction of detached one- and two-family dwellings is in Appendix Chapter 12 of this code. When adopted, as set forth in Section 103, it will take precedence over the requirements set forth in Parts I through X and Chap- ter 60 of this code. Construction, Height and Allowable Area Sec. 1202. (a) General. Buildings or parts of buildings classed in Group R be- cause of the use or character of the occupancy shall be limited to the types of con- struction set forth in Tables Nos. 5-C and 5-D and shall not exceed, in area or height, the limits specified in Sections 505, 506 and 507. (b) Special Provisions. Walls and Moors separating dwelling units in the same building shall not be of less than one-hour fire -resistive construction. GroupR,Division I Occupancies more than two stories in heightorhaving more than 3,000 square feet of floor area above the first story shall not be of less than one-hour Tire -resistive construction throughout except as provided in Section 1705 (b) 2. Storage or laundry rooms that are within Group R, Division I Occupancies that are used in common by tenants shall be separated from the rest of the building by not less than one-hour fire -resistive occupancy separation. For Group R, Division I Occupancies with a Group B,Division I parkinggarage in the basement or first floor, see Section 702 (b) 1. For attic space partitions and draft stops, see Section 2516 (f). Location on Property Sec. 1203. For fire -resistive protection of exterior wails and openings, as deter- mined by location on property, see Section 504 and Part 1V. Access and Exit Facilities and Emergency Escapes See. 1204. Exits shall be provided as specified in Chapter 33. (See also Section 3317 for special requirements and Section 3314 for exit markings.) Access to, and egress from, buildings required to be accessible shall be provided as specified in Chapter 3l. 103 N W ¢ 0U 0 0M mm 0U 0 1985 EDITION 1201-1204 Chapter 12 REQUIREMENTS FOR GROUP R OCCUPANCIES Group R Occupancies Defined Sec. 1201. Group R Occupancies shall be: Division l�i�o� els and apartment houses: Convents and monasteries (each accommodating more than 10 persons). Division 2. Not used. Division 3. Dwellings and lodging houses. For occupancy separations, see Table No. 5-B. A complete code for construction of detached one- and two-family dwellings is in Appendix Chapter 12 of this code. When adopted, as set forth in Section 103, it will take precedence over the requirements set forth in Parts I through X and Chapter 60 of this code. Construction, Height and Allowable Area Sec. 1202. (a) General. Buildings or parts of buildings classed in Group R because of the use or character of the occupancy shall be limited to the types of construction set forth in Tables No. 5-C and No. 5-D and shall not exceed, in area or height, the limits specified in Sections 505, 506 and 507. (b) Special Provisions. Group R, Division l Occupancies more than two stories in height or having more than 3000 square feet of floor area above the first story shall be not less than one-hour fire -resistive construction throughout except as provided in Section 1705 (b) 2. Storage or laundry rooms that are within Group R, Division I Occupancies that are used in common by tenants shall be separated from the rest of the building by not less than one-hour fire -resistive occupancy separation. Every apartment house three stories or more in height or containing more than 15 dwelling units and every hotel three stories or more in height or containing 20 or more guest rooms shall have an approved fire alarm system as specified in the F Fire Code. ' EXCEPTION: An alarm system need not be installed in buildings not over two F stories in height when all individual dwelling units and contiguous attic and crawl spaces are separated from each other and from public or common areas by at least F one-hour fire -resistive occupancy separations and each individual dwelling unit has an exit direct to a yard or public way. F For Group R, Division 1 Occupancies with a Group B, Division I parking garage in the basement or first floor, see Section 702 (a). For attic space partitions and draft stops, see Section 2516 (f). Location on Property • Sec. 1203. For fire -resistive protection of exterior walls and openings, as determined by location on property, see Section 504 and Part IV. Exits and Emergency Escapes Sec. 1204. Stairs, exits and smokeproof enclosures shall be as specified in Chapter 33. 71 1204-1205 UNIFORM BUILDING CODE Every sleeping room below the fourth story shall have at least one operable window or exterior door approved for emergency escape or rescue. The units shall be operable from the inside to provide a full clear opening without the use of separate tools. All escape or rescue windows from sleeping rooms shall have,p minimum net clear opening of 5.7 square feet. The minimum net clear opening height dimen- sion shall be 24 inches. The minimum net clear opening width dimension shall be 20 inches. Where windows are provided as a means of escape or rescue they shall have a finished sill height not more than 44 inches above the floor. Bars, grilles, grates or similar devices may be installed on an emergency escape or rescue windows or doors, provided: 1. Such devices are equipped with approved release mechanisms which are openable from the inside without the use of a key or special knowledge or effort; and 2. The building is equipped with smoke detectors installed in accordance with Section 1210. Light, Ventilation and Sanitation — Sec. 1205. (a) Light and Ventilation. All guest rooms, dormitories and habitable rooms within a dwelling unit shall be provided with natural light by means of exterior glazed openings with an area not less than one tenth of the floor area of such rooms with a minimum of 10 square feet. All bathrooms, water closet compartments, laundry rooms and similar rooms shall be provided with natural ventilation by means of openable exterior openings with an area not less than one twentieth of the floor area of such rooms with a minimum of 11/2 square feet. All guest rooms, dormitories and habitable rooms within a dwelling unit shall be provided with natural ventilation by means of openable exterior openings with an area of not less than one twentieth of the floor area of such rooms with a minimum of 5 square feet. In lieu of required exterior openings for natural ventilation, a mechanical ventilating system may be provided. Such system shall be capable of providing two air changes per hour in all guest rooms, dormitories, habitable rooms and in public corridors. One fifth of the air supply shall be taken from the outside. In bathrooms, water closet compartments, laundry rooms and similar rooms a mechanical ventilation system connected directly to the outside, capable of providing five air changes per hour, shall be provided. For the purpose of determining light and ventilation requirements, any room may be considered as a portion of an adjoining room when one half of the area of the common wall is open and unobstructed and provides an opening of not less than one tenth of the floor area of the interior room or 25 square feet, whichever is greater. Required exterior openings for natural light and ventilation shall open directly ` '.- onto a street or public alley or a yard or court located on the same lot as the building. 72 4 �I 1991 UNIFORM BUILDING CODE 1209.1210 In nonsprinklered Group R, Division 1 Occupancies, corridors serving an occu- pant load of 10 or more shall be separated from corridors and other areas on adja- cent floors by not less than approved fixed wired glass set in steel frames or by 20-minute smoke- and draft-control assemblies which are automatic closing by smoke detection. Smoke Detectors and Sprinkler Systems Sec. 1210. (a) Smoke Detectors. 1. General. Dwelling units, congregate resi- dences and hotel or lodging house guest rooms that are used for sleeping purposes shall be provided with smoke detectors. Detectors shall be installed in accordance with the approved manufacturer's instructions. 2. Additions, alterations or repairs to Group R Occupancies. When the valu- ation of an addition, alteration or repair to a Group R Occupancy exceeds $1,000 I and a permit is required, or when one or more sleeping rooms are added or created in existing Group R Occupancies, smoke detectors shall be installed in accordance with Subsections 3, 4 and 5 of this section. 3. Power source. In new construction, required smoke detectors shall receive their primary power from the building wiring when such wiring is served from a commercial source and shall be equipped with a battery backup. The detectorshall emit a signal when the batteries are low. Wiring shall be permanent and without a disconnecting switch other than those required for overcurrent protection. Smoke detectors may be solely battery operated when installed in existing buildings; or in £ buildings without commercial power; or in buildings which undergo alterations, repairs or additions regulated by Subsection 2 of this section. 4. Location within dwelling units. In dwelling units, a detector shall be in- stalled in each sleeping room and at a point centrally located in the corridor or area> giving access to each separate sleeping area. When the dwelling unit has more than one story and in dwellings with basements, a detector shall be installed on each story and in the basement. In dwelling units where a story or basement is split into two or more levels, the smoke detector shall be installed on the upper level, except that when the lower level contains a sleeping area, a detector shall be installed on each level. When sleeping rooms are on an upperlevel, the detector shall be placed at the ceiling of the upper level in close proximity to the stairway. In dwelling units where the ceiling height of a room open to the hallway serving the bedrooms ex- ceeds that of the hallway by 24 inches or more, smoke detectors shall be installed in the hallway and in the adjacent room. Detectors shall sound an alarm audible in all sleeping areas of the dwelling unit in which they are located. 5. Location in efficiency dwelling units, congregate residences and hotels. In efficiency dwelling units, hotel suites and in hotel and congregate residence sleep- ing rooms, detectors shall be located on the ceiling or wall of the main room or each sleeping room. When sleeping rooms within an efficiency dwelling unit or hotel suite are on an upper level, the detector shall be placed at the ceiling of the upper level in close proximity to the stairway. When actuated, the detectorshall sound an alarm audible within the sleeping area of the dwelling unit, hotel suite or sleeping room in which it is located. 107 1985 EDITION 1210.1212 sleeping rooms are on an upper level, the detector shall be placed at the center of the ceiling directly above the stairway. All detectors shall be located in accordance with approved manufacturer's instructions. When actuated, the detector shall provide an alarm in the dwelling unit or guest room. When the valuation of an addition orrepair to a Group R, Division 3 Occupancy exceeds $1,000.00, or when one or more sleeping rooms are added or created in existing Group R, Division 3 Occupancies, the entire building shall be provided with smoke detectors located as required for new Group R, Division 3 Occupan- cies. In new construction, required smoke detectors shall receive their primary power from the building wiring when such wiring is served from a commercial source. Wiring shall be permanent and without a disconnecting switch other than those required for overcurrent protection. Smoke detectors may be battery oper- ated when installed in existing buildings, or in buildings without commercial power, or in buildings which undergo alterations, repairs oradditions regulated by the second paragraph of this section. A smoke detector shall be installed in the basement of dwelling units having a stairway which opens from the basement into the dwelling. Such detector shall be connected to a sounding device or other detector to provide an alarm which will be audible in the sleeping area. (b) Sprinkler and Standpipe Systems. When required by other provisions of this code, automatic sprinkler systems and standpipes shall be installed as speci- fied in Chapter 38. Heating Sec. 1211. Every dwelling unit and guest room shall be provided with heating facilities capable of maintaining a room temperature of 70°F at a point 3 feet above the floor in all habitable rooms. Special Hazards See. 1212. Chimneys and heating apparatus shall conform to the requirements of Chapter 37 and the Mechanical Code. The storage and handling of gasoline, fuel oil or other flammable liquids in Division 1 Occupancies shall be in accordance with the Fire Code. In Division 1 Occupancies, doors leading into rooms in which Class I flamma- ble liquids are stored or used shall be protected by a fire assembly having a one - (tour fire -protection rating. Such fire assembly shall be self-closing and shall be posted with a sign on each side of the door in 1 -inch block letters stating: FIRE DOOR—KEEP CLOSED. Every room containing a boiler, central heating plant or hot-water supply boiler in Division I Occupancies shall be separated from the rest of the building by not less than a one-hour fire -resistive occupancy separation. EXCEPTION: A separation shall not be required for such rooms with equipment serving only one dwelling unit. 75 ..,.� y ........ 1991 UNIFORM BUILDING CODE (b) Sprinkler and Standpipe Systems. When required by other provisions of this code, automatic sprinkler systems and standpipes shall be installed as speci- fied in Chapter 38. - Fire Alarm Systems Sec. 1211. Group R, Division 1 Occupancies shall be provided with an approved manual and automatic fire alarm system in apartment houses three or more stories in height or containing 16 or more dwelling units, in hotels three or more stories in height or containing 20 or more guest rooms and in congregate residences three or more stories in height or having an occupant load of 20 or more. A fire alarm and communication system shall be provided in Group R, Division I Occupancies lo- cated in a high-rise building. EXCEPTIONS: 1. A manual fire alarm system need not be provided in build- ings not over two stories in height when all individual dwelling units and contiguous attic and crawl spaces are separated from each other and public or common areas by at least one-hour fire -resistive occupancy separations and each individual dwelling unit or guest room has an exit directly to a public way, exit court or yard. 2. A separate fire alarm system need not be provided in buildings which are pro- tected throughout by an approved supervised fire sprinkler system having a local alarm to notify all occupants. Heating Sec. 1212. Dwelling units, guest rooms and congregate residences shall be pro- vided with heating facilities capable of maintaining a room temperature of 70oF. at a point 3 feet above the floor in all habitable rooms. Special Hazards Sec. 1213. Chimneys and heating apparatus shall conform to the requirements of Chapter 37 and the Mechanical Code. The storage, use and handling of flammable and combustible liquids in Division 1 Occupancies shall be in accordance with the Fire Code. In Division 1 Occupancies, doors leading into rooms in which Class I flammable liquids are stored or used shall be protected by a fire assembly having a one-hour fire -protection rating. Such fire assembly shall be self-closing and shall be posted with a sign on each side of the door in 1 -inch block letters stating: FIRE DOOR— KEEP CLOSED. Every room containing a boiler, central heating plant or hot-water supply boiler in Division I Occupancies shall be separated from the rest of the building by not less than a one-hour fire -resistive occupancy separation. EXCEPTION: A separation shall not be required for such rooms with equip- ment serving only one dwelling unit. N 108 Chapters 13-16 NO REQUIREMENTS 1710-1712 UNIFORM BUILDING CODE Projections from walls of Type III, IV or V construction may be of noncombus- tible or combustible materials. Combustible projections located where openings are not permitted or where protection of openings is required shall be of one-hour fire -resistive or heavy timber construction conforming to Section 2106. Projections shall not extend more than 12 inches into the areas where openings are prohibited. For projections extending over public property, see Chapter 45. For combustible ornamentation, see Section 1705 (d). Guardrails Sec. 1711. All unenclosed floor and roof openings, open and glazed sides of landings and ramps, balconies or porches vyjj "WL ;e,p�gC 4 7I an, 30 jtiche.s,ahctiue, de or floor below W. than -service -of the buildir_)g Sha(I ,rotgcted_by. a_guarslrail. Guardrails shall be not less than 42 inches in height. Open guardrail and staff railings shall have intermediate rails or an ornamental pattern such that a sphere 6 inches in diameter cannot pass through. The height of stair railings on open sides may be as specified in Section 3306 0) in lieu of providing a guardrail. Ramps shall, in addition, have handrails when required by Section 3307. EXCEPTIONS: 1. Guardrails need not be provided on the loading side of loading docks. 2. Guardrails for Group R, Division 3 and Group M, Division I Occupancies may be 36 inches in height. 3. Interior guardrails within individual dwelling units or guest rooms of Group R, Division 1 Occupancies may be 36 inphes in height. 4. The open space between the intermediate rails or ornamental pattern of guard- rails in areas of commercial and industrial -type occupancies which are not accessible to the public may be increased such that a 12 -inch -diameter sphere cannot pass through. 5. Guardrails on a balcony immediately in front of the first row of fixed seats and which are not at the end of an aisle may be 26 inches in height. 6. Guardrails need not be provided on the auditorium side of a stage or enclosed platform. Ep, LPIastic Insulation See. 1712. (a) General. The provisions of this section shall govern the require- ments and uses of foam plastic in buildings and structures. For trim, see Section 1705 (e). Except where otherwise noted in this section, all foam plastics used in building construction shall have a flame -spread rating of not more than 75 and shall have a smoke -developed rating of not more than 450 when tested in the maximum thickness intended for use in accordance with U.B.C. Standard No. 42-1. All packages and containers of foam plastic and foam plastic ingredients shall bear the label of an approved agency showing either the flame -spread rating and smoke - developed rating of the product at the thickness tested or the use for which the product has been listed. The interior of the building shall be separated from the foam plastic by an approved thermal barrier having an index of 15 when tested in 82 1710.1712 1991 UNIFORM BUILDING CODE r (iv) The entire building shall be provided with not less than a Class B roof cov- cring. (b) Construction. Parapets shall have the same degree of fire resistance re- quired for the wall upon which they are erected, and on any side adjacent to a roof surface, shall have noncombustible faces for the uppermost 18 inches, including counterflashing and coping materials. The height of the parapet shall not be less than 30 inches above the point where the roof surface and the wall intersect. Where the roof slopes toward a parapet at slopes greater than 2:12, the parapet shall extend to the same height as any portion of the roof that is within the distance where protec- tion of wall openings would be required, but in no case shall the height be less than 30 inches. Projections Sec. 1711. Cornices, eave overhangs, exterior balconies and similar architectur- al appendages extending beyond the floor area as defined in Section 407 shall con- form to the requirements of this section. (See Sections 3305 and 3306 for additional requirements applicable to exterior exit balconies and stairways.) Projections from walls of Type I or II construction shall be of noncombustible materials. Projections from walls of Type III, IV or V construction may be of noncombus- tible or combustible materials. Combustible projections located where openings are not permitted or where protection of openings is required shall be of one-hour fire -resistive or heavy -tim- ber construction conforming to Section 2106. N For projections extending over public property, see Chapter 45. For combustible ornamentation, see Section 1705 (d). For fire -resistive requirements, see Section 504 (b). Guardrails and Vehicle Barriers g Sec. 1712. (a) Guardrails. Unenclosed floor and roof openings, open and glazed sides of stairways, landings and ramps, balconies or porches, which are more than 30 inches above grade or floor below, and roofs used for other than ser- vice of the building shall be protected by a guardrail. EXCEPTION: Guardrails need not be provided at the following locations: A. On the loading side of loading docks. of B. On the auditorium side of a stage or enclosed platform. C. Along vehicle service pits not accessible to the public. The top of guardrails shall not be less than 42 inches in height. EXCEPTIONS: I. The top of guardrails for Group R, Division 3 and Group M, Division I Occupancies and interior guardrails within individual dwelling units, Group R, Division 3 congregate residences and guest rooms of Group R, Division Occupancies may be 36 inches in height. 2. The top of guardrails on a balcony immediately in front of the first row of fixed seats and which are not at the end of an aisle may be 26 inches in height. 116 2516 UNIFORM BUILDING CODE (iii) Other uses. Draft stops shall be installed in floor -ceiling assemblies of buildings or portions of buildings used for other than dwelling or hotel occupan- cies so that the area of the concealed space does not exceed 1,000 square feet and so that the horizontal dimension between stops does not exceed 60 feet. EXCEPTION: Where approved automatic sprinklers are installed within the concealed space, the area between draft stops may be 3,000 square feet and the horizontal dimension may be 100 feet. B. Attics. (i) Single-family dwellings. None required. (ii) 3:w.go more,dwelling.unitsand-hoteig, Draft stops shall be installed in the attics, mansards, overhangs, false fronts set out from walls and similar concealed spaces of buildings containing more than one dwelling unit and in hotels. Such draft stops shall be above and in line with the walls separating tenant spaces from each other and from other uses. EXCEPTIONS: 1. Draft stops may be omitted along one of the corridor walls, provided draft stops at tenant separation walls extend to the remaining corridor draft stop. 1 2. Where approved sprinklers are installed, draftstopping may be as specified in the exception to Item (iii) below. (iii) QJhcF,,„uses, Draft stops shall be installed in attics, mansards, overhangs, false fronts set out from walls and similar concealed spaces of buildings having uses other than dwellings or hotels so that the area between draft stops does not exceed 3,000 square feet and the greatest horizontal dimension does not exceed 60 feet. EXCEPTION: Where approved automatic sprinklers are installed the area be- tween draft stops may be 9,000 square feet and the greatest horizontal dimension may be 100 feet. 5. Draft stop construction. Draftstopping materials shall be not less than Ch- inch gypsum board, 3/8 -inch plywood or other approved materials adequately supported. Openings in the partitions shall be protected by self-closing doors with auto- matic latches constructed as required for the partitions. Ventilation of concealed roof spaces shall be maintained in accordance with Section 3205. 6. Draft or fire stops in other locations. Firestopping of veneer on noncom- bustible walls shall be in accordance with Item No. 2 A above. For firestopping of wood floors on masonry or concrete floors, see Sections 1804 and 1904. ` For firestopping ceilings applied against noncombustible construction, see Section 4203, Item No. 1. For firestopping penetrations in walls required to have protected openings, see Section 4304 (e). For firestopping penetrations through floors, see Section 4305 (a). (g) Exterior Wall Coverings. 1. General. Exterior wood stud walls shall be covered on the outside with the materials and in the manner specified in this section or elsewhere in this code. Studs or sheathing shall be covered on the 204 1985 EDITION 3204-3206 Roof Insulation See. 3204. The use of combustible roof insulation shall be permitted, provided it is covered with approved roof covering applied directly thereto. For foam plastic, see Section 1712. Insulation shall be of a rigid type suitable for application of a roof covering. Where fire -retardant roof coverings are required, insulations shall be a type approved for the type of deck and the built-up roofing applied. Where built-up roofing is to be applied, vapor barriers shall be installed between the deck and the insulation where the average January temperature is below 45°F. or where excessive moisture conditions are anticipated within the building. Attics: Ac e, a(irS#o spa �c a t��JIAQ '"ST M,2 (a) Access. An attic access opening Aall be provided in the ceiling of the top floor of buildings with combustible ceiling or roof construction. The opening shall be located in a corridor or hallway of buildings of three or more stories in height and readily accessible in buildings of any height. The opening shall be not less than 22 inches by 30 inches. Thirty -inch minimum clear head room shall be provided above the access opening. Attics with a maximum vertical clear height of less than 30 inches need not be provided with access openings. (b) Draft Stops. Attics, mansards, overhangs and other concealed roof spaces formed of combustible construction shall be draft stopped as specified in Section 2516 (f). (c) Ventilation. Where determined necessary by the building official due to atmospheric or climatic conditions, enclosed attics and enclosed rafter spaces formed where ceilings are applied direct to the underside of roof rafters shall have cross ventilation foreach separate space by ventilating openings protected against the entrance of rain and snow. The net free ventilating area shall be not less than t/t5o of the area of the space ventilated, except that the area may be 1/300, provided at least 50 percent of the required ventilating area is provided by ventilators located in the upper portion of the space to be ventilated at least 3 feet above cave or cornice vents with the balance of the required ventilation provided by eaveKor cornice vents. The openings shall be covered with corrosion -resistant metal mesh with mesh openings of 1/4 inch in dimension. Smoke and Heat Venting See. 3206. (a) When Required. Smoke and heat vents shall be installed in accordance with the provisions of this section as follows: 1. In single -story Group B, Divisions 2 and 4 Occupancies having over 50,000 square feet in undivided area. EXCEPTIONS: 1. Office buildings and retail sales areas. 2. Group B, Division 4 Occupancies used for bulk frozen food storage when the building is protected by a complete automatic sprinkler system. 547 3302-3303 UNIFORM BUILDING CODE The maximum occupant load for an assembly use shall not exceed the occupant load as determined in accordance with Section 3302 (a). EXCEPTION: The occupant load for an assembly building or portion thereof may be increased, when approved by the building official, if all the requirements of this code are met for such increased number of persons. The building official may ` require an approved aisle, seati ng or f fixed equipment diagram to substantiate such an increase, and may require that such diagram be posted. (c) 's}tlg nl^)pQnt,,GQ��{y. Any room having an occupant load of 50 or C l,) O f�t Lore where fixed seats are not installed, and which is used for classroom, t assembly or similar purpose, shall have the capacity of the room posted in a conspicuous place on an approved sign near the main exit from the room. Such signs shall be maintained legible by the owner or his authorized agent and shall indicate the number of occupants permitted for each room use. (d) Revised Occupant Load. After a building is occupied, any change in use or increase in occupant load shall comply with this chapter. See Section 502. is 1jequirrect Sec. 3303. (a) Number of Exits. Every building or usable portion thereof shall have at least one exit, not less than two exits where required by Table No. 33-A and additional exits as required by this subsection. For purposes of this section, basements and occupied roofs shall be provided with exits as required for stories. Floors complying with the provisions for mezzanines as specified in Section 1716 shall be provided with exits as specified therein. The second story shall be provided with not less than two exits when the occupant load is 10 or more. EXCEPTIONS: 1. Except as provided in Table No. 33-A, only one exit need be provided from the second story within an individual dwelling unit. Refer to Section 1204 for emergency escape or rescue requirements from sleeping rooms. 2. Two or more dwelling units on the second story may have access to only one common exit when the total occupant load does not exceed 10. Occupants on floors above the second story and in basements shall havgaccess to not less than two separate exits from the floor or basement. EXCEPTIONS: I. Floors and basements used exclusively for service of the building may have one exit. For the purposes of this exception, storage rooms, laundry rooms, maintenance offices and similar uses shall not be considered as providing service to the building. 2. Basements within an individual dwelling unit having an occupant load of less than 10 may have one exit. 3. Storage rooms, laundry rooms and maintenance offices not exceeding 300 square feet in floor area may be provided with only one exit. '` 4. Occupied roofs on Group R, Division 3 Occupancies may have one exit if such occupied areas are less than 500 square feet located no higher than immediately '''A above the second story. For special requirements see the following sections: Group A, Sections 3317 and 3318; Group E, Section 3319; Group H, Section 3320; Group 1, Section 3321; Rooms Containing Fuel -fired Equipment and Cellulose Nitrate Handling Rooms, 556 3304 UNIFORM BUILDING CODE 3. Doors swinging g toward flow of traffic shall no( be b 6 permitted for use by � untrained pedestrian traffic unless actuating devices start to function at least 8 feet l l inches beyond door in open position and guide rails extend 6 feet 5 inches beyond door in open position. Clearances for guide rails shall be as follows: 1. Six inches maximum between rails and leading edge of door at the closest point in its arc of travel. 2. Six inches maximum between rails and the door in open position. 3. Two inches minimum between rail at hinge side and door in open position. 4. Two inches maximum between freestanding rails andjamb or other adjacent surface. (h) door Level at Doors. Regardless of the occupant load, there shall be a floor oranan in�dfii Me of a door. When access for the physically handi- capped is required by Section 3301 (e), the floor or landing shall be not more than 1/2 inch lower than the threshold of the doorway. When such access is not required, such dimension shall not exceed 1 inch. EXCEPTIONS: 1. In Groups R, Division 3 and M Occupancies and within individual units of Group R, Division 1 Occupancies: A. A door may open at the top step of a flight of stairs, provided the door does not swing over the top step. B. A door may open at a landing that is not more than 71/2 inches lower than the floor level, provided the door does not swing over the landing. C. Screen doors and storm doors may swing over stairs, steps or landings. 2. Doors serving building equipment rooms which are not normally occupied. (i) Landings at -Doors, Landings shall have a width not less than the width of the stairway or the width of the door, whichever is the greater. Doors in the fully open position shall not reduce a required dimension by more than 7 inches. When a landing serves an occupant load of 50 or more, doors in any position shall not reduce the landing dimension to less than one half its required width. Landings shall have a length measured in the direction of travel of not less than 44 inches. EXCEPTION: In Group R, Division 3 and M Occupancies and within individual units of Group R, Division 1 Occupancies, such length need not exceed 36 inches. A landing which has no adjoining door shall comply with Section 3306 (g). 0) Door Identification. Glass doors shall conform to the requirements speci- fied in Section 5406. Exit doors shall be so marked that they are readily distinguishable from the adjacent construction. (k) Additional Doors. When additional doors are provided for egress pur- poses, they shall conform to all provisions of this chapter. 560 EXCEPTION: Approved revolving doors having leaves which will collapse under opposing pressures may be used in exit situations, provided: L Such doors have a minimum width of 6 feet 6 inches. 2. At least one conforming exit door is located adjacent to each revolving door. 3. The revolving door shall not be considered to provide any exit width. 1985 EDITION Corridors and Exterior Exit Balconies 3305 Sec. 3305. (a) General. This section shall apply to every corridor serving as a required exit for an occupant load of 10 or more except as provided in Subsection (b) for Group R, Divisions 1 and 3 Occupancies. For the purposes of the section, the term "corridor" shall include "exterior exit balconies" and any covered or enclosed exit passageway, including walkways, tunnels and malls. Partitions, rails, counters and similar space dividers not over 5 feet 9 inches in height above the floor shall not be construed to form corridors. Exit corridors shall not be interrupted by intervening rooms. EXCEPTION: Foyers, lobbies or reception rooms constructed as required for corridors shall not be construed as intervening rooms. (b tdth, Every corridor serving an occuuantt load of 10 or o pliall be not I�,s than 44 orches in width. Regardless less occupant a , c rridors-in Group R, Divis o 3 Occupancies and within dwelling units in Group R, Division l Occupancies shall have ahuf3Wg. For special requirements for Groups E and I Occupancies, see Sections 3319 and 3321. (c) Height. Corridors and exterior exit balconies shall have a clear height of not less than 7 feet measured to the lowest projection from the ceiling. (d) Projections. The required width of corridors shall be unobstructed. EXCEPTION: Handrails and doors, when fully opened, shall not reduce the required width by more than 7 inches. Doors in any position shall not reduce the required width by more than one half. Other nonstructural projections such as trim and similar decorative features may project into the required width I1/2 inches on each side. (e) Access to Exits,When more than one exit is required, they shall be so arrangectia�It is possible to go in either direction from any point in a corridor to a separate exit, except for dead ends not exceeding 20 feet in length. (f) Changes in Elevation. When a corridor or exterior exit balcony is accessi- ble to the handicapped, changes in elevation of the floor shall be made by means of a ramp, except as provided for doors by Section 3304 (h). (g) Construction. Walls of corridors serving a Group R, Division 1 or Group I Occupancy having an occupant load of 10 or more and walls of corridors serving other occupancies having an occupant load of 30 or more shall be of not less than one-hour fire -resistive construction and the ceilings shall be not less thati that required for a one-hour fire -resistive floor or roof system. EXCEPTIONS: 1. One-story buildings housing Group B, Division 4 Occupan- cies. 2. Corridors more than 30 feet in width where occupancies served by such 1 corridors have at least one exit independent from the corridor. (See Appendix Chapter 7, Division I, for covered malls.) ev 3. Exterior sides of exterior exit balconies. 4. In Group I, Division 3 Occupancies such as jails, prisons, reformatories and similar buildings with open -barred cells forming corridor walls, the corridors and cell doors need not be fire resistive. 561 1905 EDITION 3306 Stairways Sec. 3306. (a) General. Every stairway having two or more risers serving any building or portion thereof shall conform to the requirements of this section. EXCEPTION: Stairs or ladders used only to attend equipment are exempt from the requirements of this section. (b) Width. Stairways serving an occupant load of 50 or more shall be not less than 44 inches in width. Stairways serving an occupant load of 49 or less shall be not less than 36 inches in width. Handrails may project into the required width a distance of 342 inches from 49 each side of a stairway. Stringers and other projections such as trim and similar a decorative features may project into the required width 11/2 inches on each side. jhe rise of every step in a stairway shall be not less than 4 inches nor greater than 7 inches. Except as permited in Subsections (d) and (f), the p run shall be not less than I I inches as measured horizontally between the vertical #` planes of the furthermost projection of adjacent treads. Except as permitted in Subsections (d), (e) and (f), the largest tread run within any flight of stairs shall not exceed the smallest by more than 3/8 inch. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch. EXCEPTIONS: 1. Private stairways serving an occupant load of less than 10 and stairways to unoccupied roofs may be constructed with an 8 -inch maximum rise and 9 -inch minimum run. 2. Where the bottom or top riser adjoins a sloping public way, walk or driveway { having an established grade and serving as a landing, a variation in height of the #< bottom or top riser of not more than 3 inches in every 3 feet of stairway width is permitted. (d) Winding Stairways. In Group R, Division 3 Occupancies and in private stairways in Group R, Division 1 Occupancies, winders may be used if the required width of run is provided at a point not more than 12 inches from the side of the stairway where the treads are the narrower, but in no case shall any width of run be less than 6 inches at any point. (e) Circular Stairways. Circular stairways may be used as an exit, provided the minimum width of run is not less than 10 inches and the smaller radius is not less than twice the width of the stairway. The largest tread width or riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch. (f) Spiral Stairways. In Group R, Division 3 Occupancies and in private stairways within individual units of Group R, Division I Occupancies, spiral stairways may be installed. Such stairways may be used for required exits when the area served is limited to 400 square feet. The tread must provide a clear walking area measuring at least 26 inches from the outer edge of the supporting column to the inner edge of the handrail. A run of at least 71/2 inches is to be provided at a point 12 inches from where the tread is the narrowest. The rise must be sufficient to provide 6 -foot 6 -inch headroom. The rise shall not exceed 91/2 inches. r (g) Landings. Every landing shall have a dimension measured in the direction of travel equal to the width of the stairway. Such dimension need not exceed 44 563 1985 EDITION 3306-3307 Except when enclosed usable space under stairs is prohibited by Section 3309 (f), the walls and soffits of the enclosed space shall be protected on the enclosed side as required for one-hour fire -resistive construction. All required interior stairways which extend to the top floor in any building four or more stories in height shall have, at the highest point of the stair shaft, an approved hatch openable to the exterior not less than 16 square feet in area with a minimum dimension of 2 feet. EXCEPTION: The hatch need not be provided on smokeproof enclosures or on stairways that extend to the roof with an opening onto that roof. (n) Exterior Stairway Construction. Exterior stairways shall be of noncom- bustible material except that on Types III and IV buildings not exceeding two stories in height, and on Type V buildings, they may be of wood not less thati 2 inches in nominal thickness. Exterior stairways shall not project into yards where protection of openings is required. Enclosed usable space under stairs shall have the walls and soffits protected on the enclosed side as required for one-hour fire -resistive construction. (o) Stairway to Roof. In every building four or more stories in height, one stairway shall extend to the roof surface, unless the roof has a slope greater than 4 in 12. See Subsection 3306 (m) for roof hatch requirements. (pLijeadroom. Every stairway shall have a headroom clearance of not less than 6'fee Vin ji s. Such clearances shall be measured vertically from a plane parallel and tangent to the stairway tread nosings to the soffit above at all points. (q) Stairway Numbering System. An approved sign shall be located at each p floor level landing in all enclosed stairways of buildings four or more stories in height. The sign shall indicate the floor level, the terminus of the top and bottom F of the stairway and the identification of the stairway The sign shall be located approximately 5 feet above the floor landing in a position which is readily visible when the door is in the open or closed position. Signs shall comply with require- ments of U.B.C. Standard No. 33-2. F Ramps Sec. 3307. (a) General. Ramps used as exits shall conform to the provisions of this section. (b) Width. The width of ramps shall be as required for stairways. (c) Slope. The slope of ramps required by Table No. 33-A shall be not steeper than I vertical to 12 horizontal. The slope of other ramps shall not be steeper than I vertical to 8 horizontal. When provided with fixed seating, the main floor of the assembly room of a Group A, Division 1, 2, 2.1 or 3 Occupancy may have a slope not steeper than I vertical to 5 horizontal. (d) Landings. Ramps having slopes steeper than 1 vertical to 15 horizontal shall have landings at the top and bottom, and at least one intermediate landing shall be provided for each 5 feet of rise. Top landings and intermediate landings shall have a dimension measured in the direction of ramp run of not less than 5 565 i 4304-4305 UNIFORM BUILDING CODE assigned fire -resistive rating will be the shortest duration obtained from the two tests conducted in conformance with U.B.C. Standard No. 43-1. When evidence is furnished to show that the wall was tested with the least fire -resistive side exposed to the furnace, the building official may not require that the wall be subjected to tests from the opposite side. (e) Penetrations. Penetrations in walls requiring protected openings shall be fire -stopped. Firestopping shall be an approved material securely installed and capable of maintaining its integrity when subjected to test temperatures pre- scribed in U.B.C. Standard No. 43-1 for the specific wall or partition. Openings in walls and partitions shall be protected as specified in Section 4306. Where fire -rated walls and partitions require protected openings, the „ following penetrations into or through such construction are permitted: 1. Copper or ferrous pipes or conduits may penetrate the walls or partitions, provided firestopping is provided in accordance with the first paragraph of this section. 2. Openings for steel electrical outlet boxes not exceeding 16 square inches in area, provided the area of such openings does not aggregate more than 100 square incites for any 100 square feet of wall or partition area. Outlet boxes on opposite sides of walls or partitions shall be separated by a horizontal distance of 24 inches. ti - 3. Where walls are penetrated by other materials or where larger openings are required than permitted in Item No. 2 above, they shall be qualified by tests conducted in accordance with the provisions of Section 4302 (b). Floor -Ceilings or Roof -Ceilings See. 4305. (a) General. Fire -resistive floor -ceiling or roof -ceiling construc- tion systems shall be assumed to have the fire -resistance ratings set forth in Table No. 43-C. Penetrations in floors and ceilings requiring protected openings shall be fire -stopped. Firestopping shall be of an approved material, securely installed and capable of maintaining its integrity when subjected to the time -temperature curve of U.B.C. Standard No. 43-1 for the specific floor -ceiling or roof -ceiling construction. EXCEPTION: Where penetrations are protected as shaft enclosures as required in Section 1706. When materials are incorporated into an otherwise fire -resistive assembly which may change the capacity for heat dissipation, fire test results or other substantiating data shall be made available to the building official to show that the required fire -resistive time period is not reduced. (b) Floors. Fire -resistive floors shall be continuous and all openings for me- chanical and electrical equipment shall be enclosed as specified in Section 1706. 614 EXCEPTIONS: 1. Occasional pipes, conduits, sleeves and electrical outlets of copper, sheet steel or ferrous construction may be installed within or through fire - resistive floorsystems, provided such installations do not unduly impair the required fire resistance of the assembly. 2. The provisions of this section shall not apply when such openings are in = accordance with the results of tests conducted pursuant to the provisions of Section 4302 (b). CITY OF REXBURG UNIFORM BUILDING CODE BOARD OF APPEALS February 20, 1996 Joe Laird, PE City of Rexburg Building Official PO Box 280 Rexburg, ID 83440 RE: Stephen Clark, et al. - Response to Appeal of Building Inspection Dear Joe: The Uniform Building Code Board of Appeals, duly established by action Council, has met to consider an appeal made by Stephen Clark over the Report of the Applewood Apartment located at 151 S 1st E in Rexburg. wrresVeb-Ma1fd2.20 of the Rexburg City Building Inspection We have considered the Building Inspector's reports of February 9, 1996 for buildings 1A, 1B, 1C, 2, 3, and 4 in accordance with our authority as we understand it from the Code and have made the following determinations: 1) The Building Official's reports appear to be in compliance with applicable provisions of the Uniform Building Code and the inspections were not completed in an arbitrary nor capricious manner. 2) Previous actions by the Building Inspector(s), the inspection process, the issuance of permits, and the issuance of a certificate of occupancy do not absolve the building owner(s) of the responsibilities to meet all applicable provisions of the Code. Specifically, Section 307(f) gives specific authority to suspend or revoke a certificate of occupancy issued under the provision of the Code whenever "...it is determined that the building or structure, or portion thereof, is in violation of any ordinance or regulation or any provisions of this (UBC) code". If further action or information is required, please advise. Sincerely, CITY OF REXBURG UNIFORM BUILDING CODE BOARD OF APPEALS Charles Cartmill Winston Dyer Ted Hill Bart Stevens John Watson ��EX9URG' o%� U 9gCI5HE0 NILE L. BOYLE IMYOR ROSE BAGLEY CLEPK RICHARD HORNER TAMURER 6 FINANCIAL OFFICER Applewood Apts c/o Steve Clark 625 South 5000 West Rexburg, Idaho 83440 STATE OF IDAHO March 8, 1996 Re: Building Inspection Results Dear Mr. Clark: P.O. BOX 280 12 NORTH CENTER STREET REXBURG, IDAHO 83440 PHONE (208) 359-3020 FAX (208) 359-3022 As a result of the recent visit by the U.B.C. Appeals Board to your property known as Applewood Apartments, the City of Rexburg has been made aware of possible problems in your structures that go beyond the items identified in the February 9, 1996 letter from the City Engineer. The cumulative effect of the items brought to the City's attention by the U.B.C. Board, and the items in the February 9th letter, leaves the City with no choice but to formally request, that you obtain an evaluation, and advice from an independent source as to the structural and mechanical integrity of the various buildings located on your property. As has been discussed in the past, the City of Rexburg has an obligation to issue occupancy permits to only those structures which are safe for habitation, and if it cannot be determined that your structures fall within this category, it is possible that your occupancy permit could be rescinded. On behalf of the City of Rexburg, I would welcome the opportunity to meet with you and your representatives, and discuss the findings of an independent architect or structural engineer with respect to your property. If you have questions concerning what is being asked of you, please don't hesitate to contact me during regular business hours at 359-3020 ext. 316. Sincerely, Stephen P. Zollinger, Rexburg City Attorney cc: Joe Laird, City Engineer Nile L. Boyle, Mayor