Calculation Assignment- Cladding

Exercise 1
Step 1- Perimetre of the building- (8550x 5200) x 2
= 13 750 x 2
= 27.5m

Step 2 - Gross area of walls- 27.5 x 2.4
= 66 m ^2

Step 3- Total area of openings- W1 = 1.3 x 1.6 = 1.43m ^2
W2 = 1.3 x 1.6 = 1.43m ^2
W3 = 1.2 x 1.1= 1.32m ^2
W4 = 1.5 x 1.7= 2.55m ^2
D1 = 2.1 x 0.9= 1.89m ^2

Total = 9.92 m ^2

Step 4- Nett area of walls- 66 - 9.92 = 56.08 m^2

Step 5- Coverage of boards- 1 / 0.16 = 6.25
= 6.25 boards per square metre

Step 6 Metres of boards required- 57.38 / 0.16 = 350.05m (2dp)

Step 7 Add for waste- 350.05 x 1.07 = 375.035 m

Step 8 Find the Cost- 375.035m x $7.25 per metre
= $2719.00

Exercise 2

Step 1 Perimetre of the building- (7030 x 10110) x 2
= 17140 x 2
= 34280m

Step 2 Gross area of walls- 34.28m x 2.4
= 82.27 m ^2

Step 3 Total area of openings- W1 = 1.35 x 1.5 = 2.025
W2= 1.8 x 1.2= 2.16
W3 = 1.8 x 1.8= 3.24
W4 = 1.8 x 1.2= 2.16
W5= 1.35 x 1.5= 2.025
W6= 1.2 x 1.8 = 2.16
D1= 2.1 x 0.9= 1.89

Total = 15.66 m ^2

Step 4 Nett area of walls- 82.27 - 15.66 = 66.61 m^2

Step 5 Square metres per sheet- 2.7 x 1.2 = 3.24 m^2

Step 6 Add on waste- 66.61 x 1.075 = 71.61

Step 7 Sheets required - 71.61 / 3.24 = 22.10 sheets
= 23 sheets with correct rounding

Step 8 Costing- 71.61 m^2 x $ 6.45 = $461.88