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11/19/97 3:38:3 pm Barghausen Engineers <br />Home Base - Everett <br />Roof drain detention calculations <br />5947ROOF <br />BASIN SUMMARY <br />BASIN ID: post25yr <br />SBUH METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />NAME: 25yr/24hr post -developed <br />2.15 Acres BASEFLOWS: 0.00 cfs <br />TYPElA PERV <br />2.70 inches AREA..: 0.00 Acres <br />10.00 min CN.... : 0.00 <br />TC.... . 0.00 min <br />ABSTRACTION COEFF: 0.20 <br />PEAT: RATE: 1.16 <br />cfs VOL: 0.44 <br />Ac-ft TIME: <br />480 min <br />BASIN ID: post2yr <br />NAME: 2yr/24hr post -developed <br />SBL'H METHODOLOGY <br />TOTAL AREA.......: <br />2.15 Acres <br />BASEFLOWS: <br />0.00 cfs <br />RAINFALL TYPE....: <br />TYPElA <br />PERV <br />PRECIPITATION....: <br />1.55 inches <br />AREA..: <br />0.00 Acres <br />TIME INTERVAL....: <br />10.00 min <br />CN.... : <br />0.00 <br />TC.... . <br />0.00 min <br />ABSTRACTION COEFF: <br />0.20 <br />PEAK RATE: 0.63 <br />cfs VOL: 0.24 <br />Ac-ft TIME: <br />480 min <br />BASIN ID: pre2yr <br />SBUH METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />NAME: 2yr/24hr prede <br />2.15 Acres BASEFLC <br />TYPElA <br />1.55 inches AREA..: <br />10.00 min CN.... . <br />TC.... . <br />veloped <br />WS: 0.00 cfs <br />PERV <br />2.15 Acres <br />79.00 <br />109.26 min <br />ABSTRACTION COEFF: 0.20 <br />PEAK RATE: 0.04 cfs VOL: 0.05 Ac-ft TIME: 960 min <br />pane 1 <br />IMP <br />2.15 Acres <br />98.00 <br />10.00 min <br />IMP <br />2.15 Acres <br />98.00 <br />10.00 min <br />INP <br />0.00 Acres <br />0.00 <br />0.00 min <br />