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Home My WebLink AboutDrainage CalculationsDrainage Calculations For Scentsy Campus South Commercial Warehouses 2 & 3 Core and Shell Prepared by: CK Engineering, P.C. Chad S. Kinkela, P.E. June 28, 2013 PROJECT: SCENTSY McCall Property DATE: 06-27-13 Assumptions for calculations: Runoff coefficient C = 0.90 for Commercial Site Intensity25 = 1.4 in/hr for 1 -hour storm w/ Tc=22.5 minutes Intensityt00 = 1.9 in/hr for 1 -hour storm w/ Tc=22.5 minutes 1 00year Peak Flow = C * i * A if/sec Runoff Volume= Area of Hydrograph (0.5*Base*Height) = 0.5 * 1 hr storm(3600sec) * (Peak Flow) Drainage CB 25 -yr 100=yr Runoff Area(ft) C -value Flow(cfs) Flow(cfs) Volume CDC Area'1 57822 0.90 1:67 2.27 4086 Trench A Roof Area 1 5237 0.95 0.16 0.22 391 Trench A Roof Area :2 20545 0.95 0:63 0.85 1532 Trench Roof Area 3 20566 0.95 0.63 0:85 1534 Trench A Roof Area 4 20555 0.95 0.63 0.85 1533 Trench A Roof Area 5 15237 0.95 0.47 0,63 1136 Trench A Roof Area 6 5197 0.95 0.16 0.22 388 Trench B Roof Area 7 20515 0.95 0;63 0.85 1530 Trench B Roof Area 8 846 095 0.03 0.04 63 Trench A Roof Area 9 20736 0.95 0.63 0.86 1547 Trench A Roof Area 10 20415 0.95 0,62 0.85 1523 Trench A Roof Area 11 5013 0.95 0.15 0.21 374 Trench A CDC Area 2 42911 0.90 1.24 1.68 3032 Trench B CDC Area 3 6393 0.90 0.18 0.25 Trench B 452 CW Area 1 6240 0.90 0.18 024 Drain discharg 441 CDC Warehouse 3 Roof 41470 0.95 1.27 1.72 3093 Trench C CDC Loading Dccks 14735 0.90 0.43 0.58 Trench C 1041 CK Engineering, PC 860 Headwaters Dr. Eagle, ID 83616 (208) 869-0590 PROJECT: SCENTSY McCall Property DATE: '06-27-13 East Loading Dock Area Drainage Area = 75106.00 ft' Runoff Volume = 5402 ft' 15% Sediment Storage = 810 ft, age Volume Required = 6212 ft' Use this volume for # of MC -3500 Void Ratio = 0.00% Percolation Rate = 0.00 in/hr Trench Width = 0.00 ft Trench Depth = 0.00 ft Storage/ft = Void Ratio * Depth * Width = 0.00 ft, Sidewall Perc/ft = Depth * 2sides * Perc Rate = 0.0 ft2 Endwall Perc = Sidewall Perc * Width = 0.0 ft, Length Required =,Storage Volume - Endwall Perc Storage/ft + Sidewall Perc/ft _ #DIVIO! ft Separation = Width = I Area = flow through trap 25 yr ity through throat 1000.00 gallon 12.00 in 48.00 in Baffle * Width 4.00 ft? 1.70 cfs 0.43 ft/sec 1 - 1000 gallon grease traps Less than 0.50 fps ok Use baffle spacing of 12" CK Engineering, PC 860 Headwaters Dr. Eagle, ID 83616 (208) 869-0590 4* Project Information: Project Name Scentsy CDC 2 & 3 �.y49 '��r'r'■ Location Trench A ■T�C. ■® 4memmn•Fumnfiun-n.r�ra, _ Date 6/272013 Subsurface Stormwater Management"' Engineer StormTech RPM: MC-3500 Site Calculator System Requirements System Sizing UnitsIfeet Number of Chambers Required 64 each Required Storage Volume CF Number of End Caps Required 18 each Stone Porosity(Industry Standard = 40%)%o Bed Size (including perimeter stone) 3,672 square feet Stone Above'Chambers (12 inch min.)inches Stone Required (including perimeter stone) 811. tons Stone Foundation Depth (9 inch min.)inches Volume of Excavation 986 cubic yards Average Cover over Chambers (24 inch min,)inches Nomwoven Filter Fabric Required (20% Safety Factor) 1192 square yards Bed size controlled by WIDTH or LENGTH? Length of Isolator Row 62.1 feet Limiting WIDTH or LENGTH dimension Non woven Isolator Row Fabric (20% Safety Factor) 108 square yards Woven Isolator Row Fabric (20% Safety Factor) 137 square yards Storage Volume per Chamber 194.3 CF Storage Volume per End Cap 520 CF Installed Storage Volume 13,371 cubic feet Controlled by Width (Rows) as in)(sto —r za Maximum Width = 72 feet1 mm) MAX MIN. orches 1 row of 8 chambers 8 flow of 7 chambers inc es Maximum Length= 62.1 feet • .;.*y' �' Maximum Width= :65,8 feet r11 �( r _ r ; ,c >,",•"� ,}'vim "gi� "' 18 -77" (1955 mm)0 IneheS 'This represents the estimated material. and site work costs (US dollars) for the project. Materials excluded from this estimate are conveyance pipe, pavement deslgh, eta It is always advisable to seek detailed construction costs from local installers. Please contact STORMTECH at 888-892-2694 for additional cost nformation.. Project Information: Project Name: Scentsy CDC 2 & 3 Location: Trench C Date: 6/2712013 Engineer Storm-rech RPM: MC -3500 Site Calculator System' Requirements System Sizing Units slrc+`da'1r�4 Number of Chambers Required 19 each Required Storage Volume gLi w.`s CF Number of End Caps Required 6 each Stone Porosity (Industry Standard = 40%) jtir,#-::1f % Bed Size (including perimeter stone) 1,147 square feet Stone Above Chambers (12 inch min.) .,a,A 0,r;j12. inches Stone Required (including perimeter stone) 259 tons Stone Foundation Depth (9 inch min,) ^`si inches Volume of Excavation 308 cubic yards Average Cover over Chambers (24 inch min.) r 4 %.3 inches Non -woven Filter Fabric Required (20% Safety Factor) 435 square yards Bed size controlled by WIDTH or LENGTH? Q - :' Length of Isolator Row 54.9 feet Limiting WIDTH or LENGTH dimension �M r','! feet Non -woven Isolator Row Fabric (20% Safety Factor) 95 square yards Woven Isolator Row Fabric (20% Safety Factor) 121 square yards Storage Volume per Chamber 194.3 CF Storage Volume per End Cap 52.0 CF Installed Storage Volume 4.,004 cubic feet Controlled by Width (Rows) za inches Maximum Width= 25 feet 1 row of 7 chambers 12 2 row of 6 chambers orches Maximum Length= 54.9 feet Maximum Width = 22.8 feet 8 inches This represents the estimated material and site work costs (US dollars) for the project. Materials excluded from this estimate are conveyance pipe, pavement design, etc. It is always advisable to seek detailed construction costs from local installers. Please contact STORMTECH at 888-892-2694 for additional cost nformation. CH A CDCDRAIN" CDC DRAIN ,e " N " AREA 2 57,822 sgft 42,911 sgft _ O o 5o Quo I O p o M N Q_N q Lco� KQO ¢ N II ¢ N N o d ro 0 � ifJ C3 KNO KN d 00 2 N d Ill — DISCHARGE "CDC DRA NTO AREA 3 6,393sgfi 6274q COMMERCIAL WAREHOUSE AREA 3 56205sgft r- N E S 0 loo, 200' SCALE 1" = 100' ' 5,\O NA L Q (�, ��G1STEq FO () 2 - m 9412 A C STATE OF 0P'IN �P yq0 S. KIN�� COMMERCIAL DISTRIBUTION CENTER NO. 2 REVISIONS: DRAWN BY: CSK ' CONSTRUCTION CHECKED BY: CSK CK ENGINEERING AND COMMERCIAL WAREHOUSE N O , 3 DATE: 06/25/2013 860 HEADWATERS DR. DRAINAGE AREAS DOCUMENT FILE: Soo-M-GWING.M EAGLE, ID 83616 PHONE 208-869-0590 DR: P.\SCENISY\23213\G4-ENG\02-GWC\COC\WH3 21 15