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Passive earth pressure in retaining wall design

Passive earth pressure in retaining wall design

Passive earth pressure in retaining wall design

(OP)
I am reviewing some calculations for a cantilever landscape retaining wall. I would typically neglect the passive earth pressure in the overturning analysis but in this case the calculations show the entire active pressure being balanced by the passive soil pressure.

Can the passive pressure for the soils(loose gravel) in front of the stem typically be relied upon to participate in a rotational analysis? In this particular case I am getting about 0.35 inches of wall displacement needed in order to mobilize passive earth pressure for a 5 foot tall wall.

TIA

RE: Passive earth pressure in retaining wall design

We've never used passive for OT checks. Only for lateral sliding checks.

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RE: Passive earth pressure in retaining wall design

I normally discount passive pressure for OT calculations because (as you pointed out) the wall has to move too much for it to be engaged completely. (It could flip before that.) I use passive pressure solely for sliding resistance.

RE: Passive earth pressure in retaining wall design

(OP)
Ok thanks guys. I found some old posts about it as well.

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