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ASSIGNMENT 2



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A single brick wall requires 60 bricks for each square metre. A cavity wall requires 120 bricks for each square metre. The cavity wall above Boots is 20m long and 5m high.

1 How many bricks were needed for this wall? (Calculate the
number of square metres first)
  

2 5% of the bricks were broken when the wall was being built.
How many bricks were wasted?
  

3 Calculate:
a) 10% of the bricks b) 15% c) 25% d) 50% e) 75%.
  a)


b)       c)       d)     
   e)

4 Each brick requires approximately 1kg of mortar. Work out
how much mortar was needed for the wall.
   tonnes

5 Change these amounts from kilograms to tonnes:
a) 1000kg b) 1200kg c) 1540kg d) 1625kg e) 2450kg.
  a) t


b) t     c) t     d) t   
   e) t
6 Change these amounts from tonnes to kilograms:
a) 1 tonne b) 1.245t c) 1.685t d) 2.586t e) 2.950t.
  a) kg


b) kg   c) kg   d) kg 
   e) kg
A cavity wall 6.25m long and 2.4m high is going to be built. The wall will take 2 days to build. Bricks cost £21 per square metre of wall. Mortar costs £10 per mixer load. Each mixer load weighs 100kg. The bricklayers are paid £160 per day.

7 How many bricks will be needed for this wall?
  

8 How much mortar will be required?
   tonnes

9 How many bricks were wasted if 10% were broken?
  

10 Calculate the cost of building this wall.
  £

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