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Culvert Calculator Report <br />18" CMP Downdrain - Max Capacity <br />Solve For: Discharge <br />Culvert Summary <br />Allowable HW Elevation <br />Computed Headwater Elevi <br />Inlet Control HW Elev. <br />Outlet Control HW Elev. <br />103.50 ft <br />103.50 ft <br />103.31 ft <br />103.50 ft <br />Headwater Depth/Height <br />Discharge <br />Tailwater Elevation <br />Control Type <br />2.33 <br />15.25 cfs <br />99.90 ft <br />Outlet Control <br />Grades <br />Upstream Invert <br />Length <br />100.00 ft <br />30.00 ft <br />Downstream Invert <br />Constructed Slope <br />98.50 ft <br />0.050000 ft/ft <br />Hydraulic Profile <br />Profile CompositeM2PressureProfile <br />Slope Type Mild <br />Flow Regime Subcritical <br />Velocity Downstream 8.84 ft/s <br />Depth, Downstream <br />Normal Depth <br />Critical Depth <br />Critical Slope <br />1.41 ft <br />N/A ft <br />1.41 ft <br />0.062090 ft/ft <br />Section <br />Section Shape <br />Section Material <br />Section Size <br />Number Sections <br />Circular <br />CMP <br />18 inch <br />1 <br />Mannings Coefficient <br />Span <br />Rise <br />0.024 <br />1.50 ft <br />1.50 ft <br />Outlet Control Properties <br />Outlet Control HW Elev. <br />Ke <br />103.50 ft <br />0.20 <br />Upstream Velocity Head <br />Entrance Loss <br />1.16 ft <br />0.23 ft <br />Inlet Control Properties <br />Inlet Control HW Elev. 103.31 ft <br />Inlet TypeBeveled ring, 45° (1:1) bevels <br />K 0.00180 <br />M 2.50000 <br />C 0.03000 <br />Y 0.74000 <br />Flow Control <br />Area Full <br />HDS 5 Chart <br />HDS 5 Scale <br />Equation Form <br />Submerged <br />1.8 ft2 <br />3 <br />A <br />1 <br />• <br />Project Engineer: ncampbell <br />n:\...\hydro\culvert sizing.cvm Geo -Logic AssociatesGRASS VALL CulvertMaster v3.3 [03.03.00.04] <br />02/21/14 08:11:0-ACFkntley Systems, Inc. Haestad Methods Solution Center Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 <br />