Sizing Culverts using AutoCAD Hydraflow (Rational Method)
This video will teach users how to preliminary size a culvert under a driveway entrance using the Rational Method and AutoCAD Hydraflows extension.
Rational Method
Q = ciA
Q = flow (ft^3/s)
c = rational coefficient (# 0.00 between - 1.00)
I = intensity of rainfall (inches/hour)
A = drainage area (acres)
After you find your Q (flow), you will want to size a pipe for the property capacity. In order to calculate the capacity, you will use Manning's Equation to solve for "D", or the diameter, of the pipe based on the known Q you found.
Luckily, instead of doing hand calculations, you can use AutoCAD hydraflows extension. This program allows you to quickly run iterations and different drainage scenarios to adequately size your pipe.
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Пікірлер: 8
would be interested to see your comps to get a ditch stagging of 8' for you culvert tail condition. Another practical banger per usual.
@griffinfurlong
7 ай бұрын
We could definitely do that!
Which AutoCAD version having design features?
@griffinfurlong
17 күн бұрын
I have 2020
Hey, Mr. Furlong, Thank you for breaking down such a complex topic in a way that's easy to understand. I am a second-year student from South Africa currently working on my personal project to design a culvert for the river in my local area. can you please share the AutoCAD file you were using.
@griffinfurlong
7 ай бұрын
Hello there, thank you for the kind words! I can share a variation for the dwg file. Message me as a reminder!
@AdAdra621
3 ай бұрын
@@griffinfurlong Yeah please share links to your dwg files in he description so that it's easy to follow along. Thanks a bunch for the helpful tutorials
@griffinfurlong
3 ай бұрын
@@AdAdra621 thank you! I’ll create the share links as soon as I can