How much reduction is to be expected in active earth pressure
How much reduction is to be expected in active earth pressure
(OP)
Hi everybody,
Cut and cover construction. Excavation is supported by contiguous piles and anchors. I'd like to know whether the active earth pressure acting against the basement wall can be decreased or disregarded in structural design. Thanks in advance.
Cut and cover construction. Excavation is supported by contiguous piles and anchors. I'd like to know whether the active earth pressure acting against the basement wall can be decreased or disregarded in structural design. Thanks in advance.





RE: How much reduction is to be expected in active earth pressure
To summarize, the answer is no.
RE: How much reduction is to be expected in active earth pressure
There are different design requirements for temporary walls.
At a minimum, if the walls are to remain in place, I think you be able to have a significant reduction in lateral earth pressure. It is quite common to construct external retaining walls to reduce lateral pressures on basement walls.
I guess we need more info at this point.
RE: How much reduction is to be expected in active earth pressure
It is a frequent mistake (incorrect assumption?) made by architects and structural engineers to think that because underpinning or temporary sheeting is needed to construct a building, the new building foundation wall doesn't need to be designed for the lateral pressures.
RE: How much reduction is to be expected in active earth pressure
Tiedback walls are temporary. Basement foundation walls were constructed to some extent. In the design, full lateral earth pressure was assumed. Because of some improper applications throughout the construction of basement foundation walls, it was needed to be searched the possibilities of decreasing the lateral earth pressures acting on the basement walls so that the design could still be safe under working loads and any justification for that decrease.
RE: How much reduction is to be expected in active earth pressure
RE: How much reduction is to be expected in active earth pressure
RE: How much reduction is to be expected in active earth pressure