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Home My WebLink AboutSITE PLAN & DRAINAGE Rev 3 8.23.23 - 23-00358 - Corcoran 6 Unit Apartments-Reviewed-ApprovedAuthor Name Author Email Author Phone No.: Stan Crittenden Stan.Crittenden@rexburg.org 208-372-2314 Joel Gray Joel.Gray@rexburg.org 208-372-2331 Kyle Baldwin Kyle.Baldwin@rexburg.org 208-372-2164 Description : Corcoran 6 Unit - ApartmentsAddress : 358 S 3rd WRecord Type : New Multi-Family ResidenceDocument Filename : SITE PLAN & DRAINAGE Rev 3 8.23.23 - 23-00358 - Corcoran 6 Unit Apartments.pdf Comment Author Contact Information: Corrections in the following table need to be applied before a permit can be issued Review Report Approved # 23-00358 Page Reference AnnotationType Author : Department Status Page Review Comments Applicant Response Comments SITE PLAN Rev 38.23.23 -23-00358 -Corcoran 6 UnitApartments Stamp Stan Crittenden : Fire Open 1 Approved - Fire Dept SITE PLAN Rev 38.23.23 -23-00358 -Corcoran 6 UnitApartments Stamp Kyle Baldwin : P&Z Open 1 Approved - Planning and Zoning SITE PLAN Rev 38.23.23 -23-00358 -Corcoran 6 UnitApartments Stamp Joel Gray : PW Open 1 Approved - Public Works New Multi-Family Residence Approval of plans does not constitute approval of variance from code Powered by TCPDF (www.tcpdf.org) VICINITY MAP SCALE: N.T.S. SUBJECT PROPERTY WATERC / W C / W C / W 20' 27'-1" 10' 10' 20' 20' 9' 36'-9" 28'-10" 16'24'-3" 22'1" 5' 9' 8' S S S S S S (N) 6 UNIT MULTIFAMILY 4/1 5/2 6/3 11 33 2 6 5 44 5 6 S. 3RD WEST 115.50' 115.50' 82.50' 82.50' NO PARKING STORM WATER SERVICE 4" SANITARY SEWER HEATED FIRE RISER & ALARM PANEL ROOM TRASH ENCLOSURE (PERVIOUS PAVERS) SNOW STORAGE SNOW STORAGE (N) SOLID FENCE CONNECT ROOF DRAINS TO D.I. FIRE LANE "NO PARKING" SIGNAGE LANDING & SIDEWALK 2% MAX SLOPE AND CROSS SLOPE P/L P/L P/L P/L 1 A-1 1 A-16" CURB (N) STANDARD HYDRANT Skyline Honeylocust Berberis thunbergii & Viburnum opulus 'Nanum' 60"60"60" 2 NO PARKING 5%5%2% 2% 2% 2% MAX. 2%2% MAX. 6" STEP UP AT CURB FLUSH REVISIONS SHEET: SCALE: DATE: 11 8/17/2023 PROJECT DATA: A.P.N.RPR000P0103610 LOT SIZE .214 ACRES OCCUPANCY R2 CONSTRUCTION TYPE VB EXISTING RESIDENCE AREA 969 SF EXISTING GARAGE AREA 200 SF (N) 6 UNITS 3,480 SF UNIT 1 575 UNIT 2 501 UNIT 3 661 UNIT 4 575 UNIT 5 501 UNIT 6 661 SCOPE OF WORK: REMOVE (E) SINGLE DWELLING, CONSTRUCT NEW 6 UNIT APARTMENT BLDG. SHEET INDEX: A-1 SITE PLAN A-2 FLOOR PLANS A-3 EXTERIOR ELEVATIONS A-4 BUILDING SECTIONS S-001 GEN. STRUCTURAL NOTES S-101 FND PLAN S-102 2ND FLR FRAMING PLAN S-103 ROOF FRAMING PLAN S-501 FND DETAILS S-510 FLOOR FRAMING DETAILS S-520 ROOF FRAMING DETAILS S-601 SCHEDULES S-602 SCHEDULES E-1 ELECTRICAL PLANS SITE PLAN SCALE: 1" = 10' JOB NUMBER CORCORAN 6 UNIT 358 S. 3RD WEST REXBURG ID A-1 REFERENCED CODES: 2018 INTERNATIONAL BUILDING CODE 2017 NATIONAL ELECTRICAL CODE 2018 MECHANICAL CODE OF IDAHO 2018 IDAHO COMMERCIAL ENERGY CODE 2018 IECC 2015 IDAHO PLUMBING CODE 2018 INTERNATIONAL FIRE CODE 2009 IDAHO ACCESSIBILITY CODE DRAWN BY: DAREN WARDELL 19802 VIA REDONDA RD. SONORA CA 95370 SNOW STORAGE AREA PAVED PARKING AREA 4.455 SF SNOW STORAGE AREA, 493 SF DEFERRED ITEMS: 1. FIRE SPRINKLERS, NFPA 13R. SPRINKLERS MUST BE QUICK RESPONSE 2. ENVELOPE COMM CHECK 1. ACCESSIBLE PATH SCALE: 1" = 5' THE DYER GROUP, LLC • 343 E 4th NORTH, SUITE 108 • REXBURG, ID 83440 - 6001 208.390.9700 (VOICE AND TEXT) • wdyer@thedyergroup.com COCORAN APARTMENTS STORM DRAIN SYSTEM Plans Specifications Design Calculations August 2023 1 COCORAN APARTMENTS DRAINAGE SPECIAL PROVISIONS STORM DRAINAGE General: It is required to construct storm drain facilities to serve the parking lot and front half of the new apartment complex building to be constructed. This work includes installation of two catch basins (one for filtering), connecting storm drain piping, and a storm water infiltration system as detailed on the Drawings. Standard Specifications to be used for this project are the Idaho Standards for Public Works Construction (ISPWC), 2020 edition, as supplemented by the specification information that follows. Materials: use the following materials for the storm drainage systems: • ASTM C-478 precast reinforced concrete structures for Type B catch basins, 30” interior diameter x 4’ deep as detailed on the Drawings; Precision Precast, or approved equal • Heavy-duty cast-iron rings and slotted inlet grates on catch basins; East Jordan Foundry 1610, or approved equal • ASTM D-3034 SDR 26 PVC pipe and fittings for storm drain, including gasketed downturned 90° bend inside filtering catch basin going to the infiltrators; JM Eagle, or approved equal • PVC glue, washed sand, and non-shrink grout for PVC piping connections to Type B catch basins • Nonwoven polypropylene geotextile drainage fabric for enveloping washed rock around and under infiltrators; Mirafi 160N, Winfab 600N, or approved equal • 2” minus washed drain rock or crushed stone for infiltrator bed and stone envelope • Polyethylene subsurface storm water management chamber structures (infiltrators); ADS StormTech SC-740, or approved equal Workmanship: Follow the general layout of the storm drainage system as depicted on the architectural site plan, or modify it as required/desired after discussion with the Engineer. Determine the necessary grade elevation elevations for the catch basin inlet grates so the parking lot area can be appropriately sloped to them. Catch Basins – Furnish and install the catch basin structures in accordance with the Standard Specifications to the required elevations as determined by the elevations and needed grade in the parking lot. Excavate to the required catch basin locations and elevations, compact the subgrade, provide a layer of washed or crushed gravel under the bottom of the catch basin to facilitate positioning and leveling, and install the precast catch basin structures. For the filtering catch basin prior to water entering storm water entering the infiltrators, determine the elevation for the storm drain piping to leave the structure and properly connect to the storm drain infiltrator, and then carefully knock out the concrete wall of the precast catch basin structure to accommodate the piping connection. 2 Insert the storm drain pipe into in this filtering catch basin a sufficient distance to be able to install the downturned 90° bend catch basin as shown on the Drawings so the catch basin can serve as a storm drain pretreatment structure to separate solids and oils from the water before it enters the infiltration chamber. The 90° bend is to be a gasketed push-on fitting so it can be removed for hydraulic cleaning of the storm drain pipeline and infiltration gallery as needed in the future. To assure a watertight connection and appropriate bond between the PVC piping and the catch basin concrete, it is necessary to treat the area on the pipe that will be grouted in the wall of the catch basin. Apply PVC primer and cement on the exterior of the PVC pipe that will be in the grouted connection area. Then sprinkle clean silica sand on the PVC cement, making sure to cover the entire perimeter, and allow the application to cure for a minimum of 15 minutes before placing the pipe in the wall of the structure and then applying the non-shrink grout. This will ensure a secure and watertight bond between the PVC pipe and the concrete grout. Furnish and place the required inlet grates and ring frames on the catch basins, assuring the mud ring on the frame is properly fitted interior to the diameter of the catch basin to hold the assembly in place and provide sliding resistance. Place non-shrink concrete grout to fill any remaining holes or voids in the catch basin structure installations. Thoroughly clean and remove all debris from the floor of the catch basins upon completion of construction. Storm Drain Piping – Install the storm drain piping between the catch basins and infiltrators in accordance with the Standard Specifications and as shown on the Site Plan. Connect the piping to the storm water management chamber (infiltrator) structure in accordance with the manufacturer’s recommendations. Backfill and compact the pipe trenches and around the catch basins to 96% of maximum density, making special effort to install and thoroughly compact material under the piping connection to the catch basins. Storm Drain Infiltrators – Excavate for the washed rock infiltration bed for the storm drain infiltrator structure to the required dimensions and level grade, scarify the subgrade to enhance infiltration (do not compact!), place the geotextile drainage fabric, and install the washed rock bed. Then install the storm water management chamber structure (infiltrator) on the initial washed rock bed and connect the storm drain pipe in accordance with the manufacturer’s recommendations. After the storm drain infiltrator structure is installed and properly positioned, place additional washed rock inside of the separator fabric against the trench walls and around the sides and top of the chamber to the dimensions and height indicated on the Drawings, capping the washed rock installation with the drainage fabric. Place pit run and crushed 3/4" gravel backfill above the fabric to the parking lot subgrade surface elevation and compact in a manner to avoid damage to the underlying infiltrator structure. Grade the completed subgrade to match the required parking lot grade and elevations. -- End of Special Provisions -- Infiltration trench excavated, bottom scarified to improve drainage Wrap installation with separator fabric to keep fine‐grained soils from plugging washed rock Install infiltrator gallery structure on a bed of washed rock Connect filtering catch basin to infiltrator structure Filtering catch basin allows solids to accumulate at the bottom, and then has a downturned elbow to draw water below where greases and oils float on the top – all to filter and “clean” the water going out to the infiltration gallery to substantially reduce plugging and improve performance Installation is enveloped with washed rock and separator fabric, then topsoil is restored above so completed system is functional but not visible