HomeMy WebLinkAboutBP, CO & DOCS - 08-00146 & 08-00147 - Dormitory Housing - Remodel0 0
dQ BUR�. �Q C , . Y OF Certificate of Occupancy
REXBURG City of Rexburg
CV
AmerictA Family lommunity Department of Community Development
19 E. Main St. / Rexburg, ID. 83440
Building Permit No: 0800147
Applicable Edition of Code: International Building Code 2006
Site Address: 149 E 2nd S
Use and Occupancy: Dormitory Housing
Type of Construction: Type V, non -rated
Design Occupant Load: Residential
Sprinkler System Required: No
Name and Address of Owner: Greenbrier Associates Lp
P O Box 775
Rexburg, ID 83440
Contractor: Owner /Lessee
Special Conditions:
Occupancy: Residential - 3 or more units primarily permanent in nature (apts)
This Certificate, issued pursuant to the requirements of Section 109 of the International Building
Code, certifies that, at the time time of issuance, this building or that portion of the building that
vtos inspected on the date listed vies found to be in compliance Wth the requirements of the code
for the group and division of occupancy and the use for Mich the proposed occupancy vies
classified.
Date C.O. Issued: September 01, 2009 (11:26AM)
C.O Issued by:
Building 011icial
There shall be no further change in the eiasting occupancy classification of the building nor shall any structural changes,
modifications or additions be made to the building or any portion thereof until the Building Official has reviewed and approved
said future changes.
Plumbing Inspect Fire Inspector:
. °!?
Electrical Inspector:
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O "URG City of
Rexburg
Department of Community Development Receipt Number.
19 E Main St. / Rexburg, ID. 83440
Phone (208) 359 -3020 / Fax (208) 359 -3024
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0800147 RPROOOPOOV Building Permit Fee
$818.75 $168.12 $650.63
0800147 RPROOOPOOV Plan Check Fee
$81.88 $81.88
Total: $2 0 -
II''¢�. I",i iii h( ��
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CHECK 8372 $ 250.00
Total $250.00
PAID
MAR 2 8 2®08
L
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genpmtrreceipts Page 1 of 1
0q , E
CITY O F
REXBURG .America's Family Community
COMMERCIAL & MULTI FAMILY BUILDING PEI
19 E MAIN, REXBURG, ID 83440
208- 359 -3020 X326
Please Compfeetee the Entire Application!
If the question does not apply fill in NA for non atmhral,6
0800147
149 E 2nd S-
Dormitory Housing
PARCEL NUMBE L fa4Q (W.... r l ,j, tills ror you)
SUBDIVISION: UNIT# BLOCK# LOT #_
(Addressing is based on the in on - mud be accurate)
wlvi;n lvr>t<n�: ! CONTACT PHONE
PROPERTY ADDRESS: v >
PHONE #: Horne Work ( ) Cell
OWNE MAILING ADDRESS: �/J
CITY: r t= ° TATE /)ZIP:
EMAIL J ti ,t : -�{ FAX
APPLICANT (If other than owner)
(Applicant if other than owner, a statement authorizing applicant to act as agent for owner must accompany this application.)
APPLICANT INFORMATION: ADDRESS CITY:
STATE; ZIP EMAIL FAX
PHONE #: Home (
Work (
Cell (
CONTRACTOR
MAILING ADDRESS:
PHONE: Cell#
Work#
Fax#
EMAIL IDAHO REGISTRATION # & EXP. DATE
How many buildings are located on this property?
Did you recently purchase this property No Yes (If yes, list previous owner's name) _
Is this a lot split ?,:ti YES (Pl ease bring copy of neyv legal description of property)
PROPOSED USE: x'1
(i.e., Single Family Residence, Multi Fa ' y, Apartments, Remodel, Garage,
Addition, Etc.) — CIRCLE ONE
APPLICANT'S SIGNATURE, CERTIFICATION AND AUTHORIZATION: Under penalt of perjur I hereb certif that I
have read this application and state that the i rt ation herein is correct and I swear that any information which may hereafter be given by me in hearings before the
Planning and Zoning Commission or tiq�ity Council for the City of Rexburg shall be truthful and correct. I agree to comply with all City regulations and State laws relating
to the subject matter of this application and e uthorized representatives of the City to enter upon the above - mentioned property for inspections purposes. NOTE:
The building official may revoke a emrit ap royal issued under the provisions of the 2003 International Code in cases of any false statement or misrepresentation of fact
in the application or on the plan s n w ch e t or approval was based. Permit void if not started within 180 days. Permit void if work stop for 180 days.
Signature of Owner / Applican DATE
Do you prefer to be con cte by fax, email or phone? Circle One
WARNING — BUILDING PERMIT MUST BE POSTED ON CONSTRUCTION SITE!
Plan fees are non - refundable and are paid in full at the time of application beginning Aauw 1 2005
City of Rexburg's Acceptance of the plan review fee does not constitute plan approval
**Building Permit Fees are due at time of application** **Building Permits are void if your check does not clear**
CITY STATE ZIP
0
Building Safety Department i C [TY OF
City of Rexburg REXBURG
19 E. Main ionellh@rexburg.org Phone: 208.359.3020 ext 326 Americas Family Community
Rexburg, ID 83440 www.rexburg.org Fax: 208.359.3024
Affidavit of Legal Interest
State of Idaho
County of Madison
t
Name
City '
Address
det
State
Being first duly sworn upon oath, depose and say:
(If Applicant is also Owner of Record, skip to B)
A. That I am the record owner of the property described on the attached, and I grant my
permission to:
Name
Address
to submit the accompanying application pertaining to that property.
B. I agree to indemnify, defend and hold Rexburg City and its employees harmless from any
claim or liability resulting from any dispute as to the statements contained herin or as to the
ownership of the property which is the subject of the application.
Dated this (: '� day of C?L f ( ) 20 1.
.�a�r,aaaauia,
Subscribed and sworn to before me the day and year first above written.
,0TAki r �•_ Notary Public of Idaho
p �C • Residing at: f U� �d l4 I/ Uq 4 0
�'•.•�9jE OF l�P,.•�� My commission expires: 3� d
3
Building Safety Department
City of Rexburg
19 E Main ionellh@rexburg.org Phone: 208.359.3020 x326
Rexburg, ID 83440 www.rexburg.org Fax: 208.359.3024
04 4EXB URC
U 0
CITY OF
REXBURG
�,
Americas Family Community
OWNER'S NAME
PROPERTY ADDRESS
SUBDIVISION
PHASE LOT BLOCK
Permit 408 00147
149 E 2nd S
Required N
ELECTRICAL
Electrical Contractor's Name t)cte.yi�L/% Lyea ke°. , Business Name ,044,)et/ 4J / {s
Address _67 � 2000 S City .,4& xcvs State Z( Zip 5
Cell Phone (,2oT) -39c) —,' .97-5' 97.5 Business Phone (205 366 — �65
Fax (.&S - ) _9_5� - 7 Email 6 L,,) i� l g Y�C f� !y! � .cl � eo W.
Electrical Estimate ( cost of wiring & labor $ (COMMERCIAL ONLY)
(Includes the cost of materials installed regardless of the part' supplying it).
TYPES OF INSTALLATION
(New Residential includes everything contained within the residential structure and attached garage at the same time)
RESIDENTIAL ONLY
❑ *Up to 1,500 sq ft - $72 ❑ *1,501 to 2,500 sq ft - $120
a' *2,501 to 3,500 sq ft - $168 11 *3,501 to 4,500 sq ft - $216
El * *Over 4,500 sq ft - $216 plus $.04 /sq ft: sq ft total
❑ Existing Residential (# of Branch Circuits) - $40 plus $10 per circuit: # of circuits
❑ Multi- Family Only: # of units per building - $120 /bldg + $60 /unit
❑ Services: Alterations /Repairs that require utility disconnection. (Estimate applicable for commercial).
❑ Temporary Construction Service, 200 amp or less, one location (for a period not to exceed 1 year) - $40
❑ Spa, Hot Tub, Swimming Pool - $40 plus $40 grounding grid where applicable
❑ Electric Central Systems Heating and /or Cooling (when notparl of a new residential construction permit
and no additional wiring) - $40
❑ Modular, Manufactured or Mobile Home - $50 plus $10 per circuit
❑ Other Installations: Wiring not specifically covered by any of the above:
Cost of Wiring & Labor. (Includes the cost of materials installed regardless of the party supplying it).
❑ Pumps (Domestic Water, Irrigation, Sewage): horse power
❑ Requested Inspections (of existing wiring) - $40 /hr (1 hr minimum) plus $40 /hr thereafter
❑ Temporary Amusement /Industry - $40 plus $10 per ride, concession or generator
*Includes a maximum of 3 inspections. Additional inspections charged at requested inspection rate of $40 per hour.
** Includes a maximum of 4 inspections. Additional inspections charged at requested inspection rate of $40 per hour.
-L /-/ 8 r
Signature of Licensed Contractor License numb Da
Signature of Licensed Contractor License number — Date II
The City of Rexburg s permit fee schedule is the same as required by the State of Llahn II
Building Safety Department
City of Rexburg
19 E. Main ianellh@rexburg.org Phone: 208.359.3020
Rexburg, ID 83440 www.rexburg.org Fax: 208.359.3024
U
C I T Y O F
REXBURG
_ Ow
Americas Family Community
APPLICATION: "CONSTRUCTION PERMIT"
CONSTRUCTION PERMIT #:
PERMIT APPROVED: YES/ NO $50.00 FEE PAID:
APPROVED BY:
- APPLICANT INFORMATION:
Business Name:
Office Address:
YES /NO
City / State Zip
Office Phone Number:
Contractor Performing the Work-
Contact Person: l��/�; r,. -lr r ,, Cell Phone #
-LVl.t111V1V Vt' W VICl1 1 V 1SL' 11V1V1".:
Street Address Where Work Will Be Done: f !r,
Business Name Where Work Will Be Done:
Dates For Work To Be Pones r�,F
Contact Person:' ❑
Phone Number: ( )
d
To
Cell #
PLEASE CHECK THE TYPE OF PERMITS) YOU ARE APPLYING FOR:
❑ AUTOMATIC FIRE- EXTINGUISHING SYSTEMS
❑ COMPRESSED GASES
❑ FIRE ALARM AND DETECTION SYSTEMS AND RELATED EQUIPMENT
❑ FIRE PUMPS AND RELATED EQUIPMENT
❑ FLAMMABLE AND COMMBUSTIBLE LIQUIDS
❑ HAZARDOUS MATERIALS
❑ INDUSTRIAL OVENS
❑ LP -GAS
❑ PRIVATE FIRE HYDRANTS
❑ SPRAYING OR DIPPING
❑ STANDPIPE SYSTEMS
❑ TEMPORARY MEMBRANE STRUCTURES, TENTS, AND CANOPIES
Applicant's Signature Date
7
4W 41k City of Rexburg
NAME
PROPERTY ADDRESS
SUBDIVISION
Dwelling Units: / Parcel
Please Complete the Entire Application!
If the question does not apply fill in NA for non applicable
SETBACKS
FRONT SIDE SIDE BACK
Remodeling Your Building /Home ( need Estimate $ Z f ?!'',
SURFACE SQUARE FOOTAGE: (Shall include the exterior wall measurements of the building)
First Floor Area / L'` Unfinished Basement area
Second floor /loft area Finished basement area
Third floor /loft area f Garage area
Shed or Barn Carport /Deck (30" above grad )Area
Water Meter Quantity:
Water Meter Size:
Required!!!
PLUMBING
k -/ Plumbing Contractor's Name: T J �I Business Name: /r` x " ` f %'
Address City State Zip !
Contact Phone: ( ) Business Phone: ( )
Email Fax
FIXTURE COUNT including roughed fiartures�
W Clothes Washing Machine Sprinklers
T Dishwasher_ Tub /Showers
Floor Drain_ Toilet /Urinal
Garbage Disposal : LL' Water Heater
Hot Tub /Spa _ Water Softener
Sinks
(Lavatories, kitchens, bar, mop)
Plumbing Estimate $ r (Commercial Only)
G t 1 <4�5__ J11
Req edl Signature eIlcewed Contractor License number Date
4
SUBCONTRACTOR LIST
Excavation & Earthwork:
Concrete:
Masonry: & 4
Roofing: All'
�
i
Insulation:
Drywall: C
Floor
Coveriners: i z 1,4
Special Construction
(Manufacturer or Supplier)
Roof Trusses: / V 11 It
Floor/Ceiling joists: A f�-
Siding/Exterior Trim
Other:
The City oJT�exbu rg'spermit fee schedule is the same as required by the , crate of Idaho
NAME
PROPERTY ADDRESS _
SUBDIVISION
Please Complete the Entire Application!
If the question does not apply fill in NA for non applicable
Permit#
Requiredffl
MECHANICAL
Mechanical Contractor's Name: Business Name:
Address City State Zip.
Contact Phone: ( ) Business Phone: ( )
Email Fax
Mechanical Estimate $ (Commercial /Multi Family Only)
FIXTURES & APPLIANCES COUNT (Single Family Dwelling Only)
Furnace Exhaust or Vent Ducts
Furnace /Air Conditioner Combo — Vents
Heat Pump
Air Conditioner
Evaporative Cooler
Unit Heater
r2�'
Heater
Decorative gas -fired appliance
Incinerator System
Boiler
Pool Heater
Fuel Gas Pipe Outlets including stubbed in or future outlets
Inlet Pressure (Meter Supply) PSI
other similar vents & ducts:
Heat (Circle all that apply) Gas Oil Coal Fireplace Electric Hydronic
Mechanical Sizing Calculations must be submitted with Nang& A replication
A / Aqd;�
Signature of Lic sed Contrac License number /" Dke
The City of Rexburg s permit fee schedule is the same as required by the State of Idaho
Range Hood Vents
Cook Stove Vents
Z/- _ Bath Fan Vents
5
EXEMPTIONS FROM STATE REGISTRATION
As of January 1, 2006, the City of Rexburg can no longer sell permits without having a copy of your State
registration number or your exemption from the State registration. Please send a copy of your state registration or
fill out this form showing your exemption and send it with your license renewal or your next permit application.
('This list is a summarization of Idaho Code Title 54 Chapter 5205, for full definitions of these exemptions please
see the State's website at www.ibol.idaho.gov /cont.httn
❑ Currently State licensed pursuant to Title 54 Idaho Code, Chapters:
3 Architects,
10 Electrical Contractors /Journeyman,
12 Engineers /Surveyors,
19 Public Works Contractors (exempt from fee only registration required),
26 Plumbing /Plumbers,
45 Public Works Construction Management Licensing Act (exempt from fee only registration required), or
50 Installation of heating, ventilation and air conditioning systems
❑ Employee or volunteer of a licensed contractor or part of an educational curriculum or nonprofit charitable
activity with no wages or salary
❑ Employee of a US Government agency (State, City, County, or other municipality)
❑ Public Utility doing construction, maintenance, or development to its own business
❑ Involved with gas, oil or mineral operations
❑ Supplier doing no installation or fabricating
❑ Contracting a project or projects with a total cost less than $2000
❑ Operation of a farm or ranch or construction of agriculture buildings exempt from Idaho Building Code
❑ Any type of water district operations
❑ Work in rural districts for fire prevention purposes
❑ Owner who performs work on own property or contracts with a registered contractor to do work as long as
the property is not for resale within 12 months
Owner or lessee of commercial property performing maintenance, repair, alteration or construction on that
property
❑ Real estate licensee /property manager acting within Idaho Code
❑ Engaging in the logging industry
❑ Renter working on the property where they live with the property owners approval
❑ Construction of a building used for industrial chemical processing per Idaho Code
❑ Constructi, -pf a modular building (defined by Idaho Code) to be moved out of state
I hereby ce fy� t / above information is true and correct to the best of my knowledge.
1
A �7 /
Signatu re r D to
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��a 4EUa� I TY a F CONDITIONAL USE PERMIT
REX City of Rexburg
' America's Fam ly Commsmity
Department of Community Development
19 E. Main St. / Rexburg, ID. 83440
Phone (208) 359 -3020 / Fax (208) 359 -3022
Project Information
Permit #
0600267
Permit Type Conditional Use Permit
Project Name
Greenbrier Dormitory Housing - CUP
Site Address
Parcel #
RPROOOP0014630, RPROOOP0014621,
RPROOOP0014640, RPROOOP0014590,
Project Description
RPROOOP0014571, RPROOOP0014580
Names Associated with this Project
Type Name
Contact Phone #
License # Exp Date
Fee Information
Project Valuation
Public Hearing Notice Fee
200.00
Conditional Use Permit
250.00
Total Fees Paid
$450.00
Conditions
1. Parking must comply with the most current parking requirements.
** SEE ATTACHED CONDITIONS * **
Print Name
Date Issued 10/03/2006
Signature
Date 0
Issued By: EMILYA
•
Site Plan Review Checklist
Project: -P -� J ( z'f lxsk--)
Permit# 0 tmIL1t0
Zone: Ak 0�
Surrounds g Land Uses:/l/IQ PI L t7�2
Elevations submitted: YID
Landscape Plan submitted: o
Lighting Plan submitted:
Use Consistent with zoning designation 0�
Compliance with Comprehensive Plan
Flood Plain Check
Plans are to scale
At
North arrow
Building Coverage
1C
Building setbacks:
Front yard - y i.5kt
Side yard
Back yard
Building Height Mkt �l
Minimum distance between buildings -e.K
Clear site tirangle
Driveway, parking lot dimensions
Parking space # ,, W MA11 hi le 061 -
Parking space sizes c
Parking isle widths
Handicapped requirements
Unloading, loading area
Parking spaces located in close proximity to buildings
Sidwalks along right of way
Internal pedestrian walkways,,? NPR
Snow storage
Open /common spaces functional?
Fencing /screening (HVAC equipment, dumpsters, parking, etc.)
Trash dumpster shown and screened
Buffering /landscaping requirements w
v
Lighting , Iof r
Design standard
Committee Meeting-Held If needed
l kf4�
dr "
r
Provided Approved?
Greenbrier — Ja cob's House
INTRODUCTION
for the
The runoff and drainage calculations in this report pe rtain t o ated oat 168 South 2 °d East Rexburg,
Greenbrier Development — Jacob's House parking
Idaho. The total acreage for the Jacob's House parking lot is less than 0.15 acres (approximately
6,450 square feet). Refer to site plan prepared by A+ Drafting and Designs, LLC.
The City of Rexburg requires on site retention for this pro pert wi
storm for e to rele the se ee
detained storm water to the Rexburg storm drain sy stem. design
50 -year 24 -hour event. Applying the deciun storm to the project area yields a volume of
approximately 907 cubic feet.
DESIGN METHODS
Determine Rainfall Depth
The design storm required by the City
of Rexburg for use in sizing
stormwater detention features is the
50 -year, 24 -hour storm. The NOAA
Atlas shows a total rainfall depth of
2.4 inches corresponding with the
50 -year 24 -hour design storm.
Figure 1 is the NOAA Atlas map for
the State of Idaho precipitation depths
corresponding to the design storm. In
addition to the rainfall amount an
estimated 0.2 inches of snowmelt was
added to the rainfall amount for a total
of 2.6 inches.
Determine Runoff
Not all the water that descends as - ,
precipitation results in runoff. The
ground slope, cover, vegetation, soil
type, rainfall intensity and other
abstractions affect the percentage of Figure 1: NOAA Atlas, 50- years, 24 -hour precipitation
precipitation that does not percolate
into the soil. Various hydrologic methods are used to determine runoff, each accounts for those
abstractions in various ways. The Rational Method an results n runoff
Th methoda predicts he
selected for
fraction of water that falls on a particular surface a
this analysis is the Rational Method.
; Non -t �� €�P Os(W ^_iC��ucth � ` r;�szac. €,tz t ,r3erscon3 .: 1 ::�?e
0800146
Greenbrier Parking Lot
149 E 2nd S
GREENBRIER
JACOB'S HOUSE
DRAINAGE REPORT
Submitted to:
CITY OF REXBURG
DEPARTMENT OF PUBLIC WORKS
Prepared for:
ZOLLINGER CONSTRUCTION
LION
AUG - 81006
CITY OF RD(BURG
Forsgren Associates, Inc.
350 North 2 nd East
Rexburg, ID 83440
JUNE 2008
%aUN
9500
F ( us
d S
Greenbrier — Jacob's House Pa rking Drainage Report
In the Rational Method, development projects typically utilize a coefficient for three general
types of surface; rooftop, pavement including sidewalks, and landscaping, which for our case is
assumed to be grass. Runoff coefficients were selected for those three surface types on this
project, and the corresponding area for each land surface type was determined based on the final
Site Plan configuration as presented on Sheet C -5 of the drawing set.
The volume of runoff is determined by multiplying the land area for each land surface type by the
precipitation volume and the runoff coefficient according to the following formula:
V = CIA where:
V = volume of runoff (ft)
• C = runoff coefficient
• I = rainfall depth for design storm (ft)
A = total area of the development (ft
Calculations for the volume of required storage along with the storage provided are included in
the attached spreadsheet.
i� `•:; t. E �, R,e "A31v Non-( � iit acoi.'� I�Ioiaw G ecEShfkl Storm c lcz ,1r�c
FORSGREN ASSOCIATES, INC
Client: Zollinger Construction
Project: Greenbrier - Jacob House Parking HYDROLOGIC ANALYSIS
By: BEC Checked By: KH Rational Method
V = CiA
For: Development Drainage Analysis V = runoff volume (ft3)
Condition: Based on Post - Development Conditions C = Runoff coefficient
Subarea 1 i = precipitation depth (ft)
A = Drainage Area (ft2)
Calculation of Runoff Coefficient
Surface Condition Subbasin 1 Subbasin 2
Area (ft2) Coefficient Area (ft2) Coefficient
Building Roof 700 0.92 0 0.92
Roads 3,400 0.9 0 0.9
Landscaped Area 2,350 0.2 0 0.2
open space 0 0.2 0 0.2
total 6,450 0
Averaqe Site Coefficient 0.65 #DIV /0!
Estimated Snow Melt by Degree Day Method
Max. Average Temperature for March 46.3 deg. F
Min Average Temperature for March 23.6 deg. F
Average Temperature for 24 hour period 35.0 deg. F
Estimated potential snowmelt 0.2 inches
Estimated Total Runoff Volume for 50 -year event plus snow melt & 113 of 2 -yr event
NOAA Atlas Rainfall
Subbasin 1
Subbasin 2
50 -yr
2.4 inch
0.0 inch
10 -yr
1.8 inch
0.0 inch
2 -yr
1.2 inch
1.0 inch
1/3 of 2 -yr (estimated)
0.40 inch
0.00 inch
Total precip 50 -yr (in)
Estimated Runoff Volume (50yr)
Water Quality Precip
Estimated Runoff Vol. (1/3 of 2vi
2.61 inch 0.2 inch
907 ft3 1 #DIV /0! ft3
139 ft3 1 #DIV /011 ft3
Adiust Pond Dimensions Until Thev Provide Sufficient Volume to Contain the 50 -vear event
Stormwater Detention Pond
Pond Dimensions Subbasin 1 Subbasin 2
Top Area 113 ft2 0 ft2
Bottom Area 113 ft2 0 ft2
Depth 12.0 ft 0.0 ft2
Volume 1,356 ft3 0 ft3
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8 /8 /2008K: \Misc Eng (Rexburg Non - Contract) \01 08 0955 \Greenbrier Jacob's House \HydroAnalysis Greenbrier.xls
Greenbrier — Jacob's Hou se Parking Drainage Report
INTRODUCTION
The runoff and drainage calculations in this report pertain to the storm drainage design for the
Greenbrier Development — Jacob's House parking lot located oat 168 South 2 nd East in Rexburg,
Idaho. The total acreage for the Jacob's House parking lot is less than 0.15 acres (approximately
6,450 square feet). Refer to site plan prepared by A+ Drafting and Designs, LLC.
The City of Rexburg requires on site retention for this property with no allowance to release the
detained storm water to the Rexburg storm drain system. The design storm for retention is the
50 -year 24 -hour event. Applying the design storm to the project area yields a volume of
approximately 907 cubic feet.
DESIGN METHODS
Determine Rainfall Depth
The design storm required by the City
of Rexburg for use in sizing
stormwater detention features is the
50 -year, 24 -hour storm. The NOAA
Atlas shows a total rainfall depth of
2.4 inches corresponding with the
50 -year 24 -hour design storm.
Figure 1 is the NOAA Atlas map for
the State of Idaho precipitation depths
corresponding to the design storm. In
addition to the rainfall amount an
estimated 0.2 inches of snowmelt was
added to the rainfall amount for a total
of 2.6 inches.
Determine Runoff
Not all the water that descends as
precipitation results in runoff. The
ground slope, cover, vegetation, soil
k
type, rainfall intensity and other
abstractions affect the percentage of Figure 1: NOAA Atlas, 50- years, 24 -hour precipitation
precipitation that does not percolate
into the soil. Various hydrologic methods are used to determine runoff, each accounts for those
abstractions in various ways. The Rational Method uses a runoff coefficient "C" that predicts the
fraction of water that falls on a particular surface and results in runoff. The method selected for
this analysis is the Rational Method.
d
FORSGREN ASSOCIATES, INC
Subbasin 1
Client: Zollinger Construction
50 -yr
Project: Greenbrier - Jacob's House Parking
HYDROLOGIC ANALYSIS
By: BEC Checked By: KH
Rational Method
0.0 inch
V = CiA
For: Development Drainage Analysis
V = runoff volume (ft3)
Condition: Based on Post - Development Conditions'
C = Runoff coefficient
Subarea 1
i = precipitation depth (ft)
Top Area
A = Drainage Area (ft2)
Calculation of Runoff Coefficient
Bottom Area
Surface Condition
Subbasin 1
Subbasin 2
Area (ft2) Coefficient
Area (ft2) Coefficient
Volume
Building Roof
700 0.92
0 0.92
Roads
3,400 0.9
0 0.9
Landscaped Area
2,350 0.2
0 0.2
open space
0 0.2
0 0.2
total
6,450
0
Average Site Coefficient 0.65
#DIV /0!
Estimated Snow Melt by Degree Day Method
Max. Average Temperature for March 46.3
deg. F
Min Average Temperature for March 23.6
deg. F
Average Temperature for 24 hour period 35.0
deg. F
Estimated potential snowmelt 0.2
inches
Estimated Total Runoff Volume for 50 -year event plus snow melt & 113 of 2 -yr event
NOAA Atlas Rainfall
Subbasin 1
Subbasin 2
50 -yr
2.4 inch
0.0 inch
10 -yr
1.8 inch
0.0 inch
2 -yr
1.2 inch
1.0 inch
1/3 of 2 -yr (estimated)
0.40 inch
0.00 inch
Total precip 50 -yr (in)
2.61 inch
0.2 inch
Estimated Runoff Volume (50yr)
907 ft3
#DIV /01 ft3
Water Quality Precip
Estimated Runoff Vol. 1/3 of 2yr
139 ft3
#DIV /011 ft3
Adjust Pond Dimensions Until They Provide Sufficient Volume to Contain the 50 -year event
Stormwater Detention Pond
Pond Dimensions Subbasin 1
Subbasin 2
Top Area
113 ft2
0 ft2
Bottom Area
113 ft2
0 ft2
Depth
12.0 ft
0.0 ft2
Volume
1,356 ft3
0 ft3
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8 /8 /2008K:1Misc Eng (Rexburg Non- Contract)101 08 09551Greenbrier Jacob's HouselHydroAnalysis Greenbrier.xls
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Greenbrier — Jacob's House Parking Drainage Report
In the Rational Method, development projects typically utilize a coefficient for three general
types of surface; rooftop, pavement including sidewalks, and landscaping, which for our case is
assumed to be grass. Runoff coefficients were selected for those three surface types on this
project, and the corresponding area for each land surface type was determined based on the final
Site Plan configuration as presented on Sheet C -5 of the drawing set.
The volume of runoff is determined by multiplying the land area for each land surface type by the
precipitation volume and the runoff coefficient according to the following formula:
V = CIA where:
• V = volume of runoff (ft)
• C = runoff coefficient
• I = rainfall depth for design storm (ft)
• A = total area of the development (ft
Calculations for the volume of required storage along with the storage provided are included in
the attached spreadsheet.
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FORSGREN ASSOCIATES, INC
Client: Zollinger Construction
Project: Greenbrier - Jacob's House Parking HYDROLOGIC ANALYSIS
By: BEC Checked By: KH Rational Method
V = CiA
For: Development Drainage Analysis V = runoff volume (ft3)
Condition: Based on Post - Development Conditions C = Runoff coefficient
Subarea 1 i = precipitation depth (ft)
A = Drainage Area (ft2)
Calculation of Runoff Coefficient
Surface Condition
Subbasin 1
Subbasin 2
Area ft2) Coefficient
Area (ft2) Coefficient
Building Roof
700 0.92
0 0.92
Roads
3,400 0.9
0 0.9
Landscaped Area
2,350 0.2
0 0.2
open space
0 0.2
0 0.2
total
6,450
0
Avera a Site Coefficient 0.65
#DIV /0!
Estimated Snow Melt by Degree Day Method
Max. Average Temperature for March 46.3 deg. F
Min Average Temperature for March 23.6 deg. F
Average Temperature for 24 hour period 35.0 deg. F
Estimated potential snowmelt 0.2 inches
Estimated Total Runoff Volume for 50 -year event plus snow melt & 113 of 2- r event
NOAA Atlas Rainfall
Subbasin 1
Subbasin 2
50 -yr
2.4 inch
0.0 inch
10 -yr
1.8 inch
0.0 inch
2 -yr
1.2 inch
1.0 inch
1/3 of 2 -yr (estimated)
0.40 inch
0.00 inch
Total precip 50 -yr (in)
2.61 inch
0.2 inch
Estimated Runoff Volume (50yr)
907 ft3
#DIV /011 ft3
Water Quality Precip
Estimated Runoff Vol. 1/3 of 2
139 ft3
#DIV /0! ft3
Adjust Pond Dimensions Until They Provide Sufficient Volume to Contain the 50-year event
Stormwater Detention Pond
Pond Dimensions Subbasin 1
Subbasin 2
Top Area
113 ft2
0 ft2
Bottom Area
113 ft2
0 ft2
Depth
12.0 ft
0.0 ft2
Volume
1,356 ft3
0 ft3
8 /8 /2008K: \Misc Eng (Rexburg Non - Contract) \01 08 0955 \Greenbrier Jacob's House \HydroAnalysis Greenbrier.xls