Soldier Pile Embedment into Rock
Soldier Pile Embedment into Rock
(OP)
I am designing a soldier pile and lagging wall adjacent to a railroad. The excavation will be about 22ft deep and to rock. The rock is grey shale with about the top 5 ft weathered. Below this, the rock is fairly competent (RQD~75%-85%), and have assumed that the pile is fixed here.
Where can I get information to determine how deep the pile needs to be embedded into the rock?
Where can I get information to determine how deep the pile needs to be embedded into the rock?





RE: Soldier Pile Embedment into Rock
One method to determine the depth of embedment is to model the lateral resistance and strength of the rock mass and to vary the depth of embedment until the lateral deflections and deflected shape are suitable. This is really the job of a geotechnical engineer using a analysis program such as L-Pile. I would recommend a geotechnical engineer be engaged to help you.
For a quick answer, you could ask around and see what local practice is for the bedrock configuration and height of retaining wall that you have.
Glen
RE: Soldier Pile Embedment into Rock
RE: Soldier Pile Embedment into Rock
RE: Soldier Pile Embedment into Rock
RE: Soldier Pile Embedment into Rock
Hire an expert. After all, you don't want the wall to fail -
Please see FAQ731-376 for great suggestions on how to make the best use of Eng-Tips Fora. See FAQ158-922 for recommendations regarding the question, "How Do You Evaluate Fill Settlement Beneath Structures?"