The document discusses calculating wall-to-floor ratios for two building designs, Buildings A and B. It provides the dimensions and calculations for Building A, which has a wall-to-floor ratio of 0.20. For Building B, it lists the dimensions and calculations but leaves the number of floors, total floor and wall areas, total costs, and final ratio as values for the student to calculate. The student is asked to complete the calculations for Building B and submit their worksheet.

1. Wall-to-floor ratios

2. • Go to unit 9 and download the wall-to-floor ratio ppt
• Read through the ppt and complete the task for building B
• Name your file wall to floor ratio and Submit your ppt to
moodle unit 9 under the link “Submit wall floor ration ppt
here”

6. Wall-to-floor ratios
The following activity asks you to look at the wall-to-floor ratios and form a
financial comparison between two designs. The smaller the ratio the more floor
space is created which in financial terms for a client would be rentable areas.
Building A
Plan area = 35m x 35m
Height = 35m
Storey height = 3.5m
Building B
Plan area = 22.5m x 22.5m
Height = 24.75m
Storey height = 2.75m
If the floor budget construction cost is £50/m2 and the wall area construction cost £25/m2,
calculate the wall to floor ratio for both buildings.

7. • Find : The Wall-to-floor ratios
• Worked example Building A
• Number of floors = 35/3.5 = 10 floors
• Total floor area = 10 x 35 x 35 = 12,250m2
• Total wall area = 35 x 4 x 35 = 4900m2
• Total wall cost = 4900 x £25/m2 = £122,500
• Total floor cost = 12,250 x £50/ m2 = £612,500
• Wall/floor ratio = £122,500 = 0.20
• Building B
• Number of floors = 24.75/2.75 = ? floors
• Total floor area = 9 x 22.5 x 22.5 = ? m2
• Total wall area = 24.75 x 4 x 22.5 = ? m2
• Total wall cost = 1114 x £25/m2 = ? £
• Total floor cost = 4556 x £50/m2 = ? £
• Wall/floor ratio = ? £ = What amount a decinal