Does anyone have a reference showing the equation for this angle? The only reference I have is NCMA Segmental Retaining Wall Design Manual. But I would like to see this derived in a different text.
EIT
EIT
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Coulomb Failure Plane Angle 1
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Forgot to add the equation includes:
-Backslope, wall batter and wall friction.
EIT
-Backslope, wall batter and wall friction.
EIT
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FixedEarth
Geotechnical
It is on pages 4-14 through 4-17 of the 2011 Caltrans Trenching & Shoring Manual. Careful with the wall friction angle value.
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So I finally got around to checking this out and I realized they don't include a coulomb failure plane or a failure plane equation that includes wall friction. Not a huge deal, but I just can't seem to find this equation anywhere.
EIT
EIT
fattdad - I think I remember setting it up with the force on the wall as a fn. of the base angle, taking the first derivative w.r.t. the angle, setting that to zero, and solving for the angle that gives the highest active pressure. As you know, however, that was a few years back.
Cheers!
DRG
Cheers!
DRG
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