SW6220806_Design Calculations_20221128 (4)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 4 (25-yr)
Invert Elev Dn (ft)
= 159.50
Calculations
Pipe Length (ft)
= 56.00
Qmin (cfs)
= 6.40
Slope (%)
= 0.45
Qmax (cfs)
= 6.40
Invert Elev Up (ft)
= 159.75
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
= 6.40
No. Barrels
= 1
Qpipe (cfs)
= 6.40
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.10
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 5.25
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 160.74
HGL Up (ft)
= 160.73
Embankment
Hw Elev (ft)
= 161.21
Top Elevation (ft)
= 162.35
Hw/D (ft)
= 0.97
Top Width (ft)
= 40.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
eer (t)
163A0
162A0
161 AO
160A0
159.00
Pipe 4 (25-yr)
Hw Depth (t)
325
225
125
025
-0.75
158A0 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
(SrWMCLlvert HGL Embank
Reach (R)