7 metre high King Post Retaining wall
7 metre high King Post Retaining wall
(OP)
I have been asked to check a proposal for a 7 metre high retaining wall in a gravelly clay. It is proposed to use a king post type wall with timber sleepers forming the lagging between the steel posts. The posts are proposed to be 7m above ground with an embedment of 3m. Without doing any calculations on the proposal, intuitively it would seem as if the embedment is too shallow and the posts would have to be very big steel sections. The timber sleepers would appear to be overloaded also. Overall I feel the concept is incorrect and may need revisions. All comments welcome and suggested sources of info!!





RE: 7 metre high King Post Retaining wall
RE: 7 metre high King Post Retaining wall
In order to check the structure properly you will need to have detailed knowledge of the construction sequence so you can identify the critical cases to check.
Good luck.
RE: 7 metre high King Post Retaining wall
The king posts could be cast into larger diameter bored holes to help increase passive resistance at the toe, but you will definitely require tie-back anchors.
If in the UK a good design source is CIRIA report SP95