SW6220602_Design Calculations (Culvert 3)_20220810

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jul 7 2022
PIPE 3
Invert Elev Dn (ft)
= 134.05
Calculations
Pipe Length (ft)
= 48.00
Qmin (cfs)
= 5.34
Slope (%)
= 0.52
Qmax (cfs)
= 5.34
Invert Elev Up (ft)
= 134.30
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
= 5.34
No. Barrels
= 1
Qpipe (cfs)
= 5.34
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 3.54
Culvert Entrance
= Square edge w/headwall (C)
Veloc Up (ft/s)
= 4.89
Coeff. K,M,c,Y,k
= 0.0098, 2, 0.0398, 0.67, 0.5
HGL Dn (ft)
= 135.24
HGL Up (ft)
= 135.19
Embankment
Hw Elev (ft)
= 135.65
Top Elevation (ft)
= 136.32
Hw/D (ft)
= 0.90
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 5.00
Ele (ft)
137.00
13650
13600
13550
135 M
134M
134 M
13350
0
PIPE 3
ft Depth (R)
2.70
220
170
120
070
020
-030
-080
70
Reach (t)