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(1 Ir:I C APPROVED ACADEMIC BUILDING LAYOUT JULY 2016 1 PROPOSED ACADEMIC BUILDING REVISIONS FEBRUARY 2017 F "eg Vhb North Campus Academic Overlay Figure 1 North Campus Development Merrimack College 2/13/2017 Q4 0 25 50 Feet Andover/North Andover, Massachusetts 1\vhh\projlWat-LD111625,09\cadlldlEng\Drainage111625.09-EX_Drainage-Expanded.dwg j ��Ilrf ` 1iI I fi E 11 fi, � AI1`i iliJ l 1r11 t i�`E r�j�I � ` � }� � �`1,l 1 s } t =�'f � � T ���:. rr ■rr yill+rw rr rr �.� ! qq NON _1 (1 )� } .` ' � � i1 .-1.�•. j ( j e1 ' (i ,r J n9�'' � � lyl �,\ � a \ ti' �, 1 \ Sri ) 4 - ;`! ) - - <i✓^'.. 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BDP 310B 1A-1 `1 it ,► SCS SOIL CLASSIFICATIONS o-t DRAINAGE AREA r■ ■r DRAINAGE AREA BOUNDARY RIDGEBURY FINE SANDY LOAM,0 TO 3 70A Fig PERCENT SLOPES,NSGFigure 3 February 2017 An POND FTIME OF LOW LINONCENTRATION WOODBRIDGE FINE SANDY LOAM, 0 TO 3 Proposed Conditions Drainage Areas 310A PERCENT SLOPES,HSG C Not'th Campus Development DESIGN POINT SOIL BOUNDARY WOODBRIDGE FINE SANDY LOAM, 3 TO 8 Merrimack College 3108 Andover/North Andover, Massaehusetts 0 40 80 Feet PERCENT SLOPES, HSG C N\vhb\prof\Wat-LD\11625.09\cad\ld\Planset\_Sketches\SKC-25-Drainage at Burke Rd\SKC 25-Drainage at Burke Rd.dwg y CONNECTION AT E%I P / f RESTORE/MAINTAIN EXISTING DRAIN - SAWCUT(TYF A RELOCATED 4W\Dw ` OUNDER SEP4R PRX PROJECkj��, - WYEJO EXIST 48" HOPE 04.0 (EX-48"D} IN\% 6` / \ = EOP r V V E-IECTAB WQU—C1 STC-900 > i R=215.0 \ ---® ` I=207.35 DCB-Cl ` a� =209.9 DCB-C2 1 a207.1 (0UT) - EOP ` INSTALL. 140 'F INv r OF BITUMINOUS Be$$ BERM ALONG EDGE OF PAVEMENT DCB-C2 _ r 1=210.5 DU 9 CHAMBER ~~~+��ISOLATOR ROW ! \ -_ _ r PHASE 1 SUBSURFACE ! ! ` 1 _ INFILTRATION SYSTEM 1 ! ` (IS-1) - 55 CHAMBERS TOP STONE- 216.33 BOT CHAMBER = 214.5 ro y SOT STONE 6 214.0 a 1- \ IN 214.5 PHASE 2/R1LL \ BUILD SYSTEMS _ (78 CHAMBERS) INSTALL 170 LF OF------ BITUMINOUS BERM ALONG - EDGE OF PAVEMENT ` 2125 - " �213 R-212.3 - E �pV � Drainage at Burke Rd SKC-25 North Campus Development Q1 DRAFT Merrimack College October 2, 2015 0 15 30 Feet North Andover, MA REV1 - 10/8/15 Design Parameters: 25 Year Storm Proles: North Campus Development-Merrimack College Pro]ecttt: 11625.09 Location: Andover/North Andover,Massachusetts Sheet: 1 of 1 Calculated By: OCS Date: February 2017 Revised: JWK - Date: February 2017 Title: Storm Drain Calculations per Stormcad Model with 48'Pipe Cone. System DESIGN CAPACITY UPPER LOWER i Start Stop Area C System CA Time Intensity Q Mannlnfl's Diameter Slope Q V Length Rim EGL HGL Invert Rim EGL HGL Invert Headloss Node Node (acres) (acres) (min) I. (Cfs) n (In) (fl/R) (cfs) VIM (it) (ft) (it) (It) litl (Ft) (It) IN CO-A2 DM14-1314 0.68 (N/A) 0.52 5.0 6,0 3.7 0.011 12 0,008 3.13 5.31 551 222,$0 220A3 219.76 219,00 218.00 215.55 215.85 214.70 4.21 CO-Al DMH-1113 0152 0.55 0.43 5.0 5.9 4.2 0.011 12 0.010 2.58 5.65 248 223.90 221.20 220.89 220.20 222.60 218.91 219.08 21730 1198 DMH-1113 DMH-Al2 0.73 (N/A) 1.20 5.0 5.8 7.7 0.011 15 01010 7,03 7,09 307 222,60 219.38 218,76 217.70 219.00 215.54 216,32 214.60 3.22 C0-136 DMH-811 0.25 (N/A) 0116 5,0 6.0 4.7 0.011 12 0.013 0196 4.71 175 221.50 218.56 218.41 218.00 221,10 216.11 216.45 215.80 2.31 CO-B5 DMH•1110 0.25 {N/A) 0,16 5.0 610 5.1 0.011 12 0.015 0.96 4,96 179 224.80 222.26 222.11 221.70 222.80 219.39 21938 219.10 2.72 WQU-A2 DMH-A5 2.21 0.45 0.99 510 6.0 6,7 01011 12 0.025 6.01 9,60 16 222.90 218.80 217.86 216.90 222.10 217.33 218.49 216.50 0.53 DMH-814 IS•1a 0.08 0.55 0.56 5.0 5.7 4.0 0.011 12 0.009 3.20 5,68 11 218,00 21535 215.37 214,60 218.00 215.20 215.66 214,50 0,17 DMH-B10 DMH-813 (N/A) (N/A) 0.16 0.0 5.9 4.9 0.011 12 0.014 0.94 4.83 95 222.80 219,56 219.41 219.00 222.60 218.91 218.93 217.70 0,50 DMH B11 DMH-Al2 (NIA) (N/A) OA6 0.0 5,9 4.3 0,011 12 0.011 0.94 4.40 104 221.10 216,26 216.11 215.70 219.00 214.92 215.22 214.60 1.19 DMH•A4 DMH-A5 12.29 (N/A) 11.07 5.0 5.8 132.6 0,011 48 01005 65.19 10,50 82 222.80 214.71 213.69 211.25 227.10 213.47 214.27 210.75 0.22 DMH-A3 DMH-A4 (N/A) (N/A) 5.48 0.0 5.9 138.0 0.011 48 0.007 32.63 8.98 159 224.90 214.74 214.10 212.40 222.80 214,11 214.30 211.35 -0,01 DMH•AZ DMH-A3 (N/A) (N/A) 5.48 0.0 5.9 12919 0.011 48 0.006 32.86 8,62 111 224.00 215,50 214.85 213.15 224.90 214.61 214.98 212.50 0.25 DMH-A1 DMH-AZ 11.55 (N/A) 5.48 5.0 6.0 141.1 0.011 48 0.007 33,17 9.17 152 221.90 216.66 216.01 214.30 224.00 215,29 215.70 21125 0.73 DMH-A5 DMH-A6 (N/A) (N/A) 12.06 0.0 5.8 134.2 0,011 48 0,006 70,73 10.82 249 272,10 214,29 213.19 210,65 222.00 211.18 212,96 209.10 2.01 DMH-A8 EX-OF (N/A) (N/A) 12.06 0.0 5.7 135.1 0.011 48 0.006 77.28 11.11 393 219,20 208.94 207.76 205,10 Z10,00 204.78 206,7G 202.61 2.98 DMH-A7 DMH-A8 (N/A) (N/A) 12,06 010 5.7 130.7 0.011 48 0.006 69.63 10.57 59 222,10 209.25 209,40 205.60 219,20 208.51 209.14 205.25 -0.11 DMH-A6 DMH-A7 (N/A) IN/A) 12.06 0.0 5.7 15013 01011 48 0.008 69.80 11,74 51 222.00 209.78 208.96 206.10 222.10 Z09.10 209,69 205.70 -0.14 AD-B7 DMH-Al2 0.48 0.56 0127 5.0 6.0 4.5 0,011 12 0.012 1,63 5.30 43 218.50 216.26 216.04 215.50 219.00 215,42 215.85 215.00 0.63 IS-1 DMH-AS (N/A) (N/A) 0.00 0.0 610 11.7 0.011 15 0.023 7,88 10.22 64 219.00 218,34 217.61 216.50 219.20 215,78 217.26 215.00 1.83 DMWC3 DMH-C2 (N/A) (N/A) 0.096 0 5.943 17.5 0.01.1 12 0.173 0.58 10.26 11 225.7 220.33 220.22 219,9 225.5 218,13 219.5 218 2,08 CB-CI AD-C2 0,24 0.4 D,096 5 6 5.12 0.011 12 0.015 0.58 4.33 27 223.5 221,53 721.42 221,1 223.7 221.06 221.14 220.7 0.96 'AD-C2 AD•C3 (N/A) (N/A) 0.096 0 5.979 5.03 0,011 12 D.014 0.58 4,27 35 223.7 22€.13 221'.02 220,7 223.7 220.57 220.64 220.2 0.45 AD-C3 0MH-C3 (N/A) (N/A) 0,096 D 5.057 6.4 0.011 12 0,023 0.58 5.05 13 223.7 220.61 220,52 220.2 225.7 220.25 220.33 219.9 0.27 CB-C4 DMH-EX 0A 0.36 0.036 5 6 13,09 0.011 12 0,097 0.72 6.25 30 223.5 220.76 220.69 220.5 2253 217.69 218.3 217.E 3 !.. C9-05 DM"-C6 0.066 0.39 0.026 $ 6 11.45 0.011 12 0,074 0116 5.13 47 223 220.22 220.16 220 223.1 216.58 216.99 216.5 3.58 '.. BLDG-SAK DMH-CS 0,161 0.9 0.145 5 6 4,93 0.011 12 0.013 0.88 4.67 38 224 221.54 221.39 221 223,5 220.95 221,05 220.5 0A4 DMH-CS CO-Al (N/A) (N/A) 0.145 0 5.973 4.01 0.011 12 0,009 0,87 4,09 33 1 223.5 271.04 220.89 220.5 223.9 220.96 220,98 220.2 1 •0.06 i Y i i i