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HomeMy WebLinkAboutStormwater Report - 121 CARTER FIELD ROAD 3/15/2004 MAR I 120"'M DRAINAGE CALCULATIONS'' tp' Mk 1 f Zahoruiko Residence North Andover, Massa chiasettc PREPARED FOR: Tom Zahoruiko 185 Hickory Hill Rd. OF North Andover, MA 084 r� FRANK C. � MONTEIRO -; ciV March 15, 2004 No 6341 crs� Ail A MHF Design Consultants, In . ENGINEERS ® PLANNERS . SURVEYORS 103 Stiles Road - Suite One - Salem, NH 03079 TEL (603) 893-0720 FAX (603) 893-0733 N1HF Project # 110900 ... ........................ ................ Surface Flows from PoolIPatio French Drain Subca Reach on Link Drainage Diagram for 110900-French Drain Prepared by MHF Design Consultants. Inc. 03/15/2004 HydroCAD®7.00 sin 001710 ©1986-2003 Applied Microcomputer Systems 110900- French Drain Tylre III 24-1n•2-Year kortn Rainfa11=3.10" Prepared by MBF Design Consultants,Inc. Page 2 HNAroCAD(R 7.00 s/n 001710 �' 1986-2003 Applied Microcomputer%rstenns 03/15/2001 Time span 5.00-20.00 lnrs,dt=0.05 his,301 points Runoff by SCS TR-20 method.UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subeatehment 1S: Surface Flows from Pool/Patio Runoff Area--4.500 sf Runoff Depth=2.68" Floe=Length=30' Tc=0.8 min CN=98 Runoff--035 cfs 0.023 of Pond 1P:French Drain Peak Elei=151.46' Storage=175 of Inf7o-,i=035 cfs 0.023 of Discarded=0.09 cfs 0.023 of Priman=0.00 cfs 0.000 of Outflo«=0.09 cfs 0.023 of Total Runoff Area=0.103 ac Runoff Volume=0.023 of Average Runoff Depth=2.68" 110900-French Drain Type III 24-hr 2-Year Storm Rah?fa11=3.10" Prepared by MHF Design Consultants,Inc. Page 3 HydroCAD wi 7.00 s/n 001710 40 1986-2003 Applied Mcroco;nputer Slstems 03/15/2004 Subcatchment 1S: Surface Flows from Pool/Patio Runoff = 0.35 efs 14, 12.01 hrs, Volume= 0.023 af, Depth= 2.68" Runoff by SCS TR-20 method,UH=SCS.Time Span=5.00-20.00 hrs,dt=0.05 Irs Type III 24-hr 2-Year Storni Rainfall=3.10" Area(sfl CN Description 4,500 98 Paved parking&roofs Tc Length Slope Velocity Capacity Description (nun) (feet) (ft/ft) (ft/sec) (efs) 0.8 30 0.0050 0.6 Sheet Flow, Smooth surfaces n7-0.011 P2=3.10" Subcatchment 1S: Surface Flows from Pool/Patio Hydrograph 0.38 _ (]Runoff 0.36 fl 35 cfs: 0.34 Type 11124-hr 2-Year Storm 0.32 _ Rainfall=3.1.0" 0.3 0.28-- Runoff Area=4,500 sf 0.26 0.24 Runoff Volume=0'.023 of w 0.22. Runoff Depth=2.68 a0.2- 0.18 Flow Length=30' 0 - LL _- 0.16` Tc=0.8 min 0.14 0.12 CN=98 o.17- 0,08 0.0s 0.04- 0.02 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 110900- French Drain Tj pe III 24-hr 2-Year kor m Rail?kdI=3.10" Prepared by MBF Design Consultants,Inc. Page 4 HvdroCADV 7.00 s/n 001710 40 1986-2003 Applied M erocoinputer Serstems 03/15/2004 Pond 1P: French Drain Inflow Area= 0.103 ac, Inflow Depth= 2.68" for 2-Year Storm event Inflow = 0.35 cfs!iii 12.01 hrs, Volume= 0.023 of Outflow = 0.09 cfs!ii; 11.75 hrs. Volume= 0.023 af. Atten=74 1/o, Lag=0.0 min Discarded= 0.09 cfs t'ir 11.75 hrs. Volume= 0.023 of Primary = 0,00 cfs 1& 5.00 hrs_ Volume= 0.000 of Routing by Stor-Ind method,Time Span=5.00-20.00 hrs,dt=0.05 hrs Peak EleA= 151.46 (ii; 12.0330 lnrs Surf Area=0 sf Storage= 175 cf Plug-Flo« detention time--9.0 min calculated for 0.023 of(100%of inflo«) Center-of-Mass det. time=8.9 min(7419-735.0) 4 Invert A,%,-ail.Storage Storage Description 1 150.00' 240 cf Custom Stage Data Listed beloNA, Elevation Cum.Store (feet) (cubic-feet) 150.00 0 152.00 240 # Routing Invert Outlet Devices I Primary- 152.00' 150.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 120 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef.(English) 2.54 2.61 2.61 160 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 332 2 Discarded 0.00' 0.09 cfs Exfiltrafion at all elevations Discarded Outflow Maw=0.09 cfs (it 11,75 lus HW=150.03' (Free Discharge) t-2=Exfiltration (Exiltration Controls 0.09 cfs) Primary Outflow Mai=0.00 cfs!Zii.5.00 firs HW=150.00' (Free Discharge) t-1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) 110900-French Drain Tylre III 24-hr 2-Year Storrn Rainfall=3.10" Prepared by MHF Design Consultants,Inc. Page Hvdt-oCAD&7.00 shi 001710 c;1986-2003 Applied Microcomputer Systems 03/1 /2004 Pond 1P: French Drain Hydrograph 8 Inflow Outflow - - - Inflow Area=0.103 ac ®Discarded 0.38 8 Primary 0.36- Peak Elev=151.46' 0.34 0.32z: Storage=17-5- #---- 0.3 0.28,-: 0.26 0.24 w 0.22_ 0.2- 0 0.18 U. 0.16 0.14 0.12z 0.09 cfS - - 0.1 0.08 0.06 f., 0.04 0' - 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) INFILTRATION SYSTEM RECHARGE/STORAGE CALCULATIONS Job: 110900: Gio - N.Andover WID7"H :DEPTH TOTAL STORAGE: 240.0 INFILTR. RATE: `I32 SEC/IN = 0.000283 VOID RATIO: 0.4 STEP - ACCEPTED RECHARGE RATES Soil Texture Hydro Soil Infiltration Rate (in/hr) Sand A 8.27 Loamy Sand A 2.41 Sandy Loam B 1.02 Loam B 0.52 Silt Loam C 0.27 Sandy Clay Loam C 0.17 Clay Loam C 0.09 Silty Clay Loam D 0.06 Sandy Clay D 0.05 Silty Clay D 0.04 Clay D 0.02 PAVEMENT/HARDSCAPE GRASS STRIP n> �Xl STONE CRUSHED O g / 24" FRENCH DRAIN NOT TO SCALE l AM Huntress Associates,Inc. ILmWa oArnmwam&LmdP AndomMmwchndft01810 978 470 8882•FAX 978 470 8890 APB RETAINING WALL LOAM 4 5EED Protect: 4'CHAIN LINK F ENCE ZAHORUIKO 1 • 1 y,�z�� ,� 41 SL PE,'MEET EXISTING AT NON-DISTURBANCE LINE RESIDENCE GATE North Andover,Massachusetts z N POOL ;' LOAM 4 '5EED © Pool Layout Plan LOAM 4 5EED STONE TRENCH , CONCRETE TERRACE(NP), I' � i�lB 1 �a CHI // r. ( 7 i fJ.�{L1 A � I W A' i:; (1 a a t ROVIeIon Date r OF M FRANK C. o MON IRO c] IVI ti scale, 1°=40 Drawing No. � ,' � ;' o. 36 41 D �' 5.02.04 Cx�t ,�F��G15 �� ��`� be, 00-10-1 �L File. PR-MP NOTE! LOT#3 15 LOCATED WITHIN THE NON-DI50HARGE ZONE 8 OF THE LAKE GOGHICHEWIGK AATER5HED PROTECTION P15TRICT �CXD Q � Drown, CoH or (� gj / Gheak,ed, -- 2