SW6220806_Design Calculations_20221128 (8)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 8 (25-yr)
Invert Elev Dn (ft)
= 163.45
Calculations
Pipe Length (ft)
= 56.00
Qmin (cfs)
= 1.94
Slope (%)
= 0.54
Qmax (cfs)
= 1.94
Invert Elev Up (ft)
= 163.75
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
= 1.94
No. Barrels
= 1
Qpipe (cfs)
= 1.94
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 1.53
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 3.52
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 164.46
HGL Up (ft)
= 164.27
Embankment
Hw Elev (ft)
= 164.47
Top Elevation (ft)
= 166.90
Hw/D (ft)
= 0.48
Top Width (ft)
= 40.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
eev (t)
167.00
166.00
165.00
164.00
163A0
Pipe 8 (25-yr)
Hw Depth (t)
325
225
125
025
-0.75
162.00 i i i i i i i i i i i i i i i i i-1.75
0 5 10 15 2C• 2E 30 35 40 45 5C 55 aC 65 75 80
(SrwWoLlvert HGL Embank
Reach (R)