SW6220806_Design Calculations_20221128 (6)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Jun 30 2022
Pipe 6 (25-yr)
Invert Elev Dn (ft)
= 157.60
Calculations
Pipe Length (ft)
= 44.00
Qmin (cfs)
= 9.53
Slope (%)
= 0.45
Qmax (cfs)
= 9.53
Invert Elev Up (ft)
= 157.80
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 19.0
Shape
= Elliptical
Highlighted
Span (in)
= 30.0
Qtotal (cfs)
= 9.53
No. Barrels
= 1
Qpipe (cfs)
= 9.53
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Horizontal Ellipse Concrete
Veloc Dn (ft/s)
= 3.52
Culvert Entrance
= Square edge w/headwall (H)
Veloc Up (ft/s)
= 4.38
Coeff. K,M,c,Y,k
= 0.01, 2, 0.0398, 0.67, 0.5
HGL Dn (ft)
= 158.80
HGL Up (ft)
= 158.81
Embankment
Hw Elev (ft)
= 159.25
Top Elevation (ft)
= 160.51
Hw/D (ft)
= 0.92
Top Width (ft)
= 32.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (tt)
161-00
160A0
159.00
156A0
167A0
156A0
0
Pipe 6 (25-yr)
5 10 15 20 25 30 35 40 45 50
Elliptical CWvat HGL Embank
Hw Depth (t)
320
220
120
020
-01I0
-1 E0
55 60 65
Reach (tt)