Commercial & structural
Sourced answers on commercial & structural, written for the person standing in front of the problem.
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1
How to build a concrete block retaining wall
Compacted base, a dead-level first course, free-draining gravel and a drain outlet. Taller walls and any wall with a load above it need an engineer.
2What is precast concrete?
Precast concrete is cast and cured in a plant, then trucked in and set in place. Factory conditions buy tighter quality control and take weather off the job.