Retaining wall - base slab stresses
Retaining wall - base slab stresses
(OP)
Hi ALL
I am designing a cantilever wall which supposed to retain 6.3 m height of soil from both sides, but one side is to be back filled directly while the other is taking time maybe a year.
i designed for the worst case( in terms of stability) which is active pressure only.. but when i check the active with passive pressures the base slab reinforcement was shocking !?
please share me your opinions about the worst case for design and the reason why the base slab moments doubled ?
I have uploaded the analysis
I am designing a cantilever wall which supposed to retain 6.3 m height of soil from both sides, but one side is to be back filled directly while the other is taking time maybe a year.
i designed for the worst case( in terms of stability) which is active pressure only.. but when i check the active with passive pressures the base slab reinforcement was shocking !?
please share me your opinions about the worst case for design and the reason why the base slab moments doubled ?
I have uploaded the analysis






RE: Retaining wall - base slab stresses
This is pretty basic retaining wall design info. Please make sure to consult with your superior to verify that your design is correct.
RE: Retaining wall - base slab stresses
RE: Retaining wall - base slab stresses
I fully agree with your design when there is full backfill on one side only.
RE: Retaining wall - base slab stresses
RE: Retaining wall - base slab stresses
but your assumption (about rotation of soil mass and its effect) is realistic , full passive case wont be reached.
RE: Retaining wall - base slab stresses
RE: Retaining wall - base slab stresses
This case considers a road across a valley , the road is connected with stairs with a slope about 55% .
so the retaining wall is located at the end of that road.
According to the fact that every soil has its own angle of friction and failure wedge as well as the need of retention, even if we construct another retaining wall for the stairs it will contribute with pressure to the road's retaining wall. so the solution is to make the back fill simultaneously.
But what is the criterion upon which we distribute our retaining walls ? is it the width of the failure wedge ?
RE: Retaining wall - base slab stresses