Retaining Wall - Overturning Moments
Retaining Wall - Overturning Moments
(OP)
Folks,
See attached sketch. I have a situation where the footing needs to be founded at 2m below the Existing Ground Level (left side). The right side is backfilled to 4.2m elevation. I don't want to extend the wall all the way to the bottom if I can avoid it.
However, how do I account for the overturning moment due to this partial height retaining element?
See attached sketch. I have a situation where the footing needs to be founded at 2m below the Existing Ground Level (left side). The right side is backfilled to 4.2m elevation. I don't want to extend the wall all the way to the bottom if I can avoid it.
However, how do I account for the overturning moment due to this partial height retaining element?






RE: Retaining Wall - Overturning Moments
RE: Retaining Wall - Overturning Moments
RE: Retaining Wall - Overturning Moments
Only a portion of this earth pressure actually retained (equal to height of wall) will be transferred to the column, at its appropriate Height (H/3 from the bottom of the wall).
RE: Retaining Wall - Overturning Moments
RE: Retaining Wall - Overturning Moments
Are we saying the same thing?
You are right above passive pressure, I am not counting on it.
The only issue I see is that this system leaves no room for any excavation on the non-retained side.
This may just end up being an academic study, but I wanted to make sure I got the right concept.
RE: Retaining Wall - Overturning Moments
I guess you could just take one column and the tributary width and analyze that.
RE: Retaining Wall - Overturning Moments
RE: Retaining Wall - Overturning Moments
Typically the soil will not flow under the wall. The mechanism where this would occur is a bearing capacity failure of the the soil on the low side. This typically is a problem with softer clays and a deeper excavation
RE: Retaining Wall - Overturning Moments
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Retaining Wall - Overturning Moments
Yes, that is what I meant.
RE: Retaining Wall - Overturning Moments
RE: Retaining Wall - Overturning Moments
The soil pressure is calculated from the top of retained soil. It doesn't much care whats below it just whats pushing down on it.