HomeMy WebLinkAboutPeak-hour-demand 06-22-2020Page | 1
SE Engineers
PO Box 10776
Bozeman, MT 59718
03/11/20
Aspen Properties Building Peak Hour Demand
· Peaking Factor (Qmax /Q ave) = (18 + P 1/2 ) / (4 + P ½)
o P = Population in thousands
o P = 92 people = 0.092 Thousand of People
o Qmax /Q ave = (18 + 0.303) / (4 + 0.303) = 18.303 / 4.303 = 4.25
o Qmax /Q ave = 4.25
· Building Average Daily Demand (ADD)
o Office = sq.ft. X 0.09 = 9,189 sq.ft. X 0.09 = 827 GPD
· Maximum Daily Demand (MDD)
o MDD = Average Daily Demand (ADD) x 2.0
o MDD = 827 GPD X 2.0
o MDD = 1,654 GPD
· Peak Hourly Demand (PHD)
o Peak Hourly Demand = (Peaking Factor (Qmax /Q ave ) X MDD) / 24 hours/ day
o Peak Hourly Demand = 4.25 x 1654 GPD / 24 hr/day
o Peak Hourly Demand = 292.9 GPH
SE Engineers
Bill Edden, PE
Owner, Mechanical Engineer