Text · page 24 of 65
Read the whole document on one page (all 65 pages, each with its own heading)
CARMINA WOOD DESIGN Project No.: 25-4181 Date: 2/11/2026 80 SILO CITY ROW, SUITE 100 Project Name: Proposed Bank BUFFALO, NEW YORK, 14203 Project Address: 1465 Union Road - Town of West Seneca (716) 842-3165 Subject: Sanitary Sewage & Domestic Water Demand Calcs FAX (716) 842-0263 Sheet: 1 of 1 Sanitary Sewage Demand Calculations: 8 employees @ 15.0 gpd/employee = 120 gpd Total Demand = 120 gpd Water Demand Calculations (Domestic): Contractor Shops: 120 gpd x 1.1 = 132 gpd *use 110% of sewage demand *use 1.8 peaking factor and assume an 12 hour day 132 gpd x 1day/12hr x 1hr/60min = 0.18 gpm 0.18 gpm x 1.8 = 0.33 gpm Qpeak Headlosses: Qpeak = 0.33 gpm Pipe = 1.00 inch Type "k" copper C = 140 Length = 61 LF (approx. distance from tap to RPZ) 10.44 L Q1.85 10.44(61)(1.98)1.85 HL = = = 0.01 ft = 0.00 psi C1.85 D4.866 (140)1.85 (1)4.866 Δ elev = 8.5 ft = 3.68 psi *RPZ is located inside building Loss through meter = 1 psi Loss through RPZ = 12 psi Total Losses = 16.7 psi Static Pressure = 80 psi *from hydrant flow test Residual Pressure Following RPZ = 80 - 16.7 = 63.3 psi (available after rpz & meter) Page 24 of 65