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What is the typical proportioning of a retaining wall?

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The base slab thickness of a cantilever retaining wall is about 10% of the total height of retaining wall. The length of base slab is about 50-70% of the total height of retaining wall. Generally speaking, the thickness of wall stems may vary along the stem provided that its size should not be less than 300mm to facilitate concrete placement.

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For retaining wall with a total height exceeding 8-12m, it is recommended to adopt counterfort retaining wall. The counterforts in counterfort retaining wall are normally spaced at about 30% to 70% of the total height. The length of base slab is about 40-70% of the total height of retaining wall.

This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

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