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What size rock is best suited for filling in and around the wall units in a drainage zone?

April 26, 2017best drainage Filling rock size suited units wall zone

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What size rock is best suited for filling in and around the wall units in a drainage zone?

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A clean, angular ¾” rock is best for corefill if available. Otherwise, use a clean rock material that is about ½ to 1-1/2 in diameter. Avoid aggregates that are round in nature. Angular material will provide the best interlocking strength. Also avoid material that contains a lot of fine grains in that these fines can flow with water through the wall and possibly stain the wall face.