How to Calculate Retaining Wall
What is Retaining Wall?
Retaining Wall Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.
Formula
Wall Base Width = 0.4 to 0.6 × Wall Height
Step-by-Step Guide
- 1Calculate stem thickness, footing width, and drainage requirements
- 2Apply the formula using your project measurements
- 3Add required safety factors or waste allowances per code
Worked Examples
Input
4 ft tall wall
Result
Base Width = 0.5 × 4 = 2 ft minimum
Common Mistakes to Avoid
- ✕Not applying code-required safety factors or derating
- ✕Forgetting to account for waste and cut losses in material estimates
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