SW6220806_Design Calculations_20221128 (3)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 3 (25-yr)
Invert Elev Dn (ft)
= 158.40
Calculations
Pipe Length (ft)
= 48.00
Qmin (cfs)
= 11.80
Slope (%)
= 0.42
Qmax (cfs)
= 11.80
Invert Elev Up (ft)
= 158.60
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 24.0
Shape
= Circular
Highlighted
Span (in)
= 24.0
Qtotal (cfs)
= 11.80
No. Barrels
= 1
Qpipe (cfs)
= 11.80
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.34
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 5.81
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 160.02
HGL Up (ft)
= 159.83
Embankment
Hw Elev (ft)
= 160.42
Top Elevation (ft)
= 161.30
Hw/D (ft)
= 0.91
Top Width (ft)
= 32.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
El ow (t)
162A0
161.00
160.0E
156A0
157A0
0
Pipe 3 (25-yr)
5 10 15 2� 25 34 35 40 45 50 55 60
cirWffcWvert HGL Embank
Hw Depth (t)
3-40
2.40
1-40
0-40
-0Js0
-1.60
65 7.
Reach Iftl