Wood Retaining Wall Formula:
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The Wood Retaining Wall Calculator estimates the number of timbers needed and the total cost for building a retaining wall based on the wall dimensions and timber specifications.
The calculator uses these formulas:
Where:
Explanation: The calculation determines how many timbers are needed by dividing the total length by timber length, then multiplying by the height of the wall.
Details: Proper calculation ensures you purchase the right amount of materials, avoiding both shortages and costly overages. It also helps with budgeting for your project.
Tips: Enter all dimensions in feet. For irregular walls, divide into rectangular sections and calculate separately. Always round up timber counts to whole numbers.
Q1: Should I add extra timbers for waste?
A: Yes, it's recommended to add 5-10% extra to account for cutting waste and potential errors.
Q2: What's the typical timber length?
A: Common lengths are 8ft, 10ft, or 12ft, but this varies by supplier and project requirements.
Q3: How does wall height affect timber count?
A: Each additional course (layer) of timbers requires a full row along the length of the wall.
Q4: Does this account for posts or other materials?
A: No, this calculates only the horizontal timbers. You'll need additional materials for posts, drainage, etc.
Q5: How accurate is the price estimate?
A: This provides a material cost estimate only. Labor, delivery, and other factors will affect final project cost.