Surcharge Pressure A Concrete Wall

Retaining walls generally have little vertical load other than self weight and weight of any soil on a footing.

Surcharge pressure a concrete wall.

The pressure exerted by the earth on the retaining wall will be more in this case. Lateral surcharge pressure on retaining wall and shoring. If the earth on the earth retained side is not level or the earth carries loads the earth is said to have surcharge. Instead of 170 ib ft2 two feet heavy soil s efp we use 45 efp as surcharge from machinery on non structural stab on 8 feet backfill.

Retaining wall design example with surcharge load. However this isnt the case if the retaining wall is. Surcharge on retaining walls. Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider.

K q 7 0 where k is the applicable at rest active or passive pressure coefficient. As shown in example 1 if the wall form was filled with concrete faster than the concrete could start to stiffen the maximum lateral pressure would be 1 500 psf or 2 5 times larger than the. A retaining wall which retains earth level upto the top of the retaining wall is a wall without surcharge. It can be either dead loads for example sloping backfill above the wall height or live load which could result from the highway or parking lot paving or adjacent footing.

Will increase soil lateral pressure to wall but less then machinery directly on soil due to slab s pressure dissipating effect. In the case of a uniform surcharge pressure q taken over a wide area behind the wall the lateral pressure due to the uniform surcharge. Surcharge loads acting on retaining walls are additional vertical loads that used to the backfill soil above the top of the wall.