SW6220806_Design Calculations_20221128 (11)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 11 (25-yr)
Invert Elev Dn (ft)
= 157.85
Calculations
Pipe Length (ft)
= 62.00
Qmin (cfs)
= 12.26
Slope (%)
= 0.56
Qmax (cfs)
= 12.26
Invert Elev Up (ft)
= 158.20
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 24.0
Shape
= Circular
Highlighted
Span (in)
= 24.0
Qtotal (cfs)
= 12.26
No. Barrels
= 1
Qpipe (cfs)
= 12.26
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.48
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 5.87
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 159.48
HGL Up (ft)
= 159.46
Embankment
Hw Elev (ft)
= 160.06
Top Elevation (ft)
= 160.80
Hw/D (ft)
= 0.93
Top Width (ft)
= 50.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
eev (t)
161-00
160A0
159.00
150A0
167A0
Pipe 77 (25-yr)
Hw Depth (t)
290
090
-020
-120
156.00 i i i i i i i i i i i i i i i i i i-2.20
0 5 115 20 25 a� M 4� 45 50 55 60 65 75 885
C i rcu I a r C u Iv ert HGL Embank
Reach Iftl