# How to Estimate Concrete Block Wall

Written by lara webster
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Concrete blocks are used to create structures that are fire resistant and energy efficient. Concrete block walls can also be used in landscaping, or to afford privacy on a property. Before beginning a concrete block-wall project, it is important to determine the amount of material necessary to avoid having to halt your project to buy more.

Skill level:
Moderately Easy

### Things you need

• Concrete blocks
• Mortar
• Tape measure

## Instructions

1. 1

Measure the length and height of the space where you want to build your wall.

2. 2

Calculate the area of the space by multiplying the length and the height. For example, if you determine that the wall will be 30 feet long and 10 feet high, the area will be 300 feet.

3. 3

Determine the number of concrete blocks you need by multiplying the area by 1.125, assuming you use an 8X16 concrete block, the standard size. If the blocks are smaller, adjust your calculations --- for example, a block of 4X16 would require the area to be multiplied by 2.25.

4. 4

Estimate the amount of mortar needed by purchasing three bags for every 100 blocks.

5. 5

Buy an additional 5 to 10 per cent of supplies to ensure that you have enough material in the event of breakage or unforeseen circumstances.

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