SW6220806_Design Calculations_20221128 (2)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 2 (25-yr)
Invert Elev Dn (ft)
= 155.60
Calculations
Pipe Length (ft)
= 56.00
Qmin (cfs)
= 20.06
Slope (%)
= 0.45
Qmax (cfs)
= 20.06
Invert Elev Up (ft)
= 155.85
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 30.0
Shape
= Circular
Highlighted
Span (in)
= 30.0
Qtotal (cfs)
= 20.06
No. Barrels
= 1
Qpipe (cfs)
= 20.06
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.74
Culvert Entrance
= Square edge w/headwall (C)
Veloc Up (ft/s)
= 6.43
Coeff. K,M,c,Y,k
= 0.0098, 2, 0.0398, 0.67, 0.5
HGL Dn (ft)
= 157.61
HGL Up (ft)
= 157.37
Embankment
Hw Elev (ft)
= 158.17
Top Elevation (ft)
= 160.00
Hw/D (ft)
= 0.93
Top Width (ft)
= 32.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
El ow (t)
161.00
160.00
159.00
158.00
157.00
166A0
155.00
Pipe 2 (25-yr)
Hw Depth (t)
5.15
d_75
3.15
2.15
1.15
0.15
-0ffi
154.00 i i i i i i i i i i i i i i i i iAM
0 5 10 15 2� 2E 30 35 40 45 5� 55 a� 65 75 80
Circular Culvert HGL Embank
Reach Iftl