SW6220806_Design Calculations_20221128

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 1 (25-yr)
Invert Elev Dn (ft)
= 157.50
Calculations
Pipe Length (ft)
= 56.00
Qmin (cfs)
= 37.66
Slope (%)
= 0.54
Qmax (cfs)
= 37.66
Invert Elev Up (ft)
= 157.80
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 36.0
Shape
= Circular
Highlighted
Span (in)
= 36.0
Qtotal (cfs)
= 37.66
No. Barrels
= 1
Qpipe (cfs)
= 37.66
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 5.99
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 7.55
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 160.00
HGL Up (ft)
= 159.79
Embankment
Hw Elev (ft)
= 160.80
Top Elevation (ft)
= 161.92
Hw/D (ft)
= 1.00
Top Width (ft)
= 32.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
El ow (tt)
162A0
161 AO
160.00
159.00
158A0
167A0
Pipe 1 (25-yr)
Hw Depth (tt)
420
320
220
120
020
-013a
156A0 i i i i i i i i i i i i i i i i i-180
0 5 10 15 2C• 2E 30 35 4C 45 5C 55 aC 35 75 80
Cirwlar Culvert HGL Embank
Reach (R)