Segmental Retaining Wall Takeoff
Blocks per course and number of courses (with the buried first course), total and cap blocks, and base-trench and drainage gravel for a segmental wall. Over 4 ft needs an engineered design with geogrid.
Formula and source
Buried = max(1 in/ft of height, one block height); courses = ceil(total height / block height); total = courses x ceil(run x 12 / block length); gravel by zone geometry.
Segmental retaining-wall maker guidance (Allan Block / Versa-Lok, by name).
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