Brickwork Calculating Quantities of Brick

Key skills resource sheet

Calculating Quantities of Brick This material was developed by the KSSP and HMP Liverpool as part of their Key Skills Support Programme development project.

If we know how to obtain dimensions / sizes to calculate the area (m2) of a wall (rectangle (rectangle)) 2 - we need to be able to convert the ‘m ‘m and the m ’ into a quantity of bricks. The size of a standard brick is shown below, as you can see the height of the brick is 65mm. 65mm

102.5mm

215mm So, each brick has a height of 65mm. 65mm. Then Then when you you bed the brick brick onto onto mortar, mortar, the height of the brick is raised to 75mm. 75mm. Go and ask to see a GAUGE STAFF and have it explained.

That means that the bed joint is 10mm.

Brick 65mm

Brick & Bed = 75mm

Bed joint 10mm

4 course of bricks (4 x 65mm) + 4 bed joints (10mm) = 300mm

Bricks

300mm Beds

©Crown ©Cr own Copyrig Copyright ht 2000 2000

Produced Produ ced with with assistance assistance from from the the DfEE Key Skills Skills Support Support Progra Programme mme

I’ve got it – I can follow that – what next?

Well, try try to solve solve the follow following. ing. How many many course of bricks would there be in the wall below?

900mm

Answer =

Okay – let’s move on a little bit further. Let’s have a look at how many many bricks are required to build a wall.

What things do I need to remember? Or, what things do I need to know?

Well if you have got this far – you are doing exceptionally well! I’ll show you now what you need to know – and how to work it all out Let’s start with the wall thickness

What do you mean THICKNESS? It’s just a term used by Bricklayers – for example you may be building a wall 1 brick thick or a ½ brick thick. Let me show show you.



½ brick thick

1 brick thick

1½ brick thick

Got the the idea? Let me explain it. it.

To explain it further – forget about about the dimensions / sizes sizes of a brick for a moment. moment. Look at the diagram below

½ brick thick 1 brick thick A ½ brick thick wall, with an area of 1m of 1m2

- has 60 bricks

A 1 brick thick wall (twice as thick) with an area of 1m of 1m2

- has 120 bricks

A 1½ brick thick wall with an area of 1m of 1m2

- has 180 bricks

How many would a 2 brick thick wall have?

Answer =

Here’s an example, to help explain it further.

2000mm

10000mm Front elevation

1 Brick thick End elevation

Step 1 Convert MILLIMETRES Convert MILLIMETRES into METRES Length Height


= =

10000mm ÷ 1000 = 10m 2000mm ÷ 1000 = 2m


Step 2 Find the area of the wall. USING THE FORMULA - Length x Height = Area So, 10.000m x 2.000m = 20m2 Step 3 Walling thickness = 1 Brick thick How many bricks are there in 1m2 - for a 1 brick thick wall? = 120

Step 4 Multiply the area of the wall by the amount of bricks in 1m2 Area of wall = 20m2 Bricks per/m2 = 120 bricks 20m2 x 120 bricks = 2,400 bricks needed.

Now, it’s your turn. Calculate the bricks required required for the the wall. Remember the FOUR steps.

3500mm

12400mm

1½ brick

Answer Step 1 =

Answer Step 2 =

Answer Step 3 =

Answer Step 4 =





Brickwork Calculating Quantities of Brick

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