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Originally Posted by ogawa only  just double brick the wall , if your useing normal brick,s , and back fill inbetween !! or use concrte block's on there side , i can help you work out the cost of fibre glass just send me a pm with all the info  |
Regarding retaining wall thickness, the rule of 1/3 the height = thickness, therefore, if you go 3 ft high, to be on the safe side, make the first 9" at 1 1/2 blocks (13.5") .To make it perfect structurally, the steps in wall thickness should be on the outside but as it is only 3 ft, keep the wall flush on the outside, it looks better.
John
