Rip-Rap/Conduit outlet protection sizing

[bperry]

Is anyone aware of a relatively "simple" program (Excel, Mathcad,Dos-based) that will solve for Rip-Rap size and/or design of Conduit outlet protection? this is primarily for purposes of Soil Erosion and Sediment Control.

 

[PECPESC]

Check with Maccaferri on gabions/mats !

http://www.maccaferri-usa.com/

 

[cvg]

try US Bureau of Reclamation, "Hydraulic Design of Stilling Basins and Energy Dissipaters" Figure 165 is a simple chart - enter with velocity and it gives the required stone diameter / weight.

 

[wasserjunge]

bperry,

Have you found anything that works yet? I have been looking for the exact same thing.

Thanks

 

[bperry]

Actually, I did find something just the other day.
There are actually a few good spreadsheets in excel format that I found for Detention design, Channel design, culvert design, etc.

Go to:

http://www.udfcd.org/

and click on spreadsheets/downloads

I thought it was helpful. See for yourself and let me know if this is the same thing you were looking for.