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Selection of Retaining Wall Type

Selection of Retaining Wall Type

Selection of Retaining Wall Type

Can anyone offer any advise on wall type selection? Is there a book on the market that discusses the pros and cons of the various wall types and when one type would be used over the other. When do you rule out cast in place walls?

RE: Selection of Retaining Wall Type

Dear Mann

I think you're asking a little too much in one question. The selection of a type of retaining wall does not solely depend on the height of material to be retained. There are a multitude of reasons why certain types of wall are selected over others. For example:

a) Have you sufficient room to construct an in-situ wall before placing fill behind it?
b) Is the formation able to carry the base loads for this type of wall or should a sheet piled alternative be considered?
c) Do ground conditions dictate that only certain methos can be used for construction?
d) Can sufficient passive resistance at the toe of the wall be generated or is a deeper piled toe required?
e) Do you have the appropriate plant, materials and skilled labour on the project to construct a wall of this type, or another.
f) Does your client want a finish best produced by a proprietary precast system?
g) What is the design life of the wall? This may preclude sheet piles for example.
h) Can ties be incorporated to reduce bending moments, or are buttresses required.

Theses are just a few samples elements that are involved in choosing the appropriate wall type. In some cases, one factor may sufficiently override all other problems or benefits. I'm afraid it is down to the expertise of the engineer (in view of safety, client requirements and cost)as to which type is best for your particular case.


Andy Machon

RE: Selection of Retaining Wall Type

Ginger is right - this is a simple question with very complex answers. For the quickest insight into a non-cast- in-place system that is technically and economically appropriate for your site, you should contact a specialty geotechnical contractor in your area who designs/builds a lot of walls.

RE: Selection of Retaining Wall Type

Could you tell me the typical type of the wall in Hong kong.
i mean the structure(details) in the humid subtropical area.

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