With your wall”s net square footage calculated, finding your baseline block order is as simple as multiplying that area by 1.125. For example, a retaining wall measuring 20 feet long by 4 feet high has a surface area of 80 square feet. Multiplying 80 by 1.125 gives you a baseline of 90 blocks.
Don”t stop there. You should never buy just the baseline amount. Add a 10% safety buffer for cuts, corner staggering, and accidentally damaged units during transit. Bumping that 90-block baseline up by 10% (multiplying 90 by 1.10) gives you 99. Rounding up to an even 100 helps ensure you won”t have to stop mid-project for an unexpected supply run.
Finishing steps to order just the right amount
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