Retaining Walls Calculator

Retaining Walls Calculator
Wall Length (m)
Wall Height (m)
Note:All calculation results including number of units and square metres are approximate in value only. Please confirm product quantities required at time of order. Retaining Wall calculator assumes a wastage factor of approximately 10% in the wastage calculation. Ask your installer for wastage factor required for your retaining wall project.
Apologies to WA, NT, and TAS customers as retaining walls calculator facility is not available in your State.

Print out your calculation results and take them to your nearest Boral stockist.
  Manual Retaining Wall Calculation
Measure your area of the wall to determine quantity of blocks required. This area is simply calculated by Length (m) x Height (m) = Area (m2) for basic square or rectangular spaces.
(where m = metres)

Step 1: Measure the area of your retaining wall.
To do this you will need:
- The length of the wall.
- The height at both ends of the wall.

This area is simply calculated by length x height for basic square or rectangle spaces. For odd shapes break your area down into several sections. For triangular areas use half base x height to calculate your area.

Step 2: Increase your total area by 10% to allow for cuts, part blocks & breakages.