CPCCBC5003: A Supervise the Planning of On-Site Medium Rise Building Assignment 2022

CPCCBC5003A 1
CPCCBC5003A SUPERVISE THE PLANNING OF ON-SITE MEDIUM RISE BUILDING
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CPCCBC5003A 2
CPCCBC5003A Supervise the Planning of On-Site Medium Rise Building
1. Analysis of tasks from different trades
The trades selected for analysis in this question are carpet floor laying and ceramic tiling on all
levels of the building in Project 2. These tasks are analyzed below
i) Carpet laying
This trade entails laying the carpet in designated units and common areas of the building. The
carpet is fixed directly on the floor. The various aspects of carpet laying are discussed below
a) Measurements of material quantities
Material quantities for carpet laying are determined by measuring the floor area of the units
where the carpet is laid. This is done by taking off measurements from the drawings of Project 2
building, as follows
Level 1
Living/dining carpet: (3.53 x 5.65) + (1.2. x 1.7) + (4.35 x 6.6) + (4.69 x 5.42) + (5.25 x 3.97) +
(1.39 x 1.71)
= 99.3344 m2
Bed carpet: (3.65 x 3.63) + (3.2 x 2.8) + (3 x 3.25) + (3.24 x 3.23) + (3.59 x 3)
= 53.1947 m2
Sub-total = 99.3344 + 53.1947 = 152.53 m2
Level 2
Bed carpet: (3.95 x 3.487) + (3.42 x 3.5) + (3.25 x 3.14) + (3.2 x 3.26) + (3 x 3.19) + (3.1 x 3) +
(3.42 x 3.5) + (3.95 x 3.487) + (3.2 x 3.26) + (3.14 x 3.25)
= 111.63 m2
Level 3
Living/dining carpet: (3.935 x 3.94) + (3.14 x 2.75) + (4.02 x 7.32) + (3.75 x 4.69) + (3.75 x
5.68) + (3.68 x 7.32) + (3.94 x 4.135) + (4.195 x 3.57)

CPCCBC5003A 3
= 150.65845 m2
Study carpet: (2.4 x 2.9) + (0.99 x 0.6) + (3.2 x 3) + (2.5 x 2.4) + (0.99 x 0.6) + (2.9 x 2.4) +
(0.99 x 0.6)
= 31.302 m2
Sub-total = 150.65845 + 31.302 = 181.96 m2
Level 4
Bed carpet: (3.95 x 3.487) + (3.42 x 3.5) + (3.25 x 3.14) + (3.2 x 3.26) + (3 x 3.09) + (3 x 3.09) +
(3.35 x 3.5) + (3.9 x 3.45) + (3.14 x 3.282) + (3.2 x 3.2)
= 110.65 m2
Level 5
Living/dining carpet: (3.94 x 3.94) + (4.195 x 2.9) + (4.02 x 7.3) + (3.75 x 5.5) + (3.75 x 5.5) +
(4.02 x 7.3)
= 127.6311 m2
Study carpet: (2.9 x 2.4) + (0.99 x 0.6) + (3 x 3.22) + (2.5 x 3.2) + (2.9 x 2.4) + (0.99 x 0.6)
= 32.768 m2
Sub-total = 127.6311 + 32.768 = 160.4 m2
Total carpet area = 152.53 + 111.63 + 181.96 + 110.65 + 160.4
= 717.17 m2
b) Productivity constants
The carpet is fixed directly hence the productivity constant is 0.2. This means that 0.2 labour
days are required to lay or fix 1 m2 of the carpet.
c) Tradesman hours
The number of tradesman hours are calculated from the productivity constant provided above. In
this case, the number of tradesman hours is simply the number of hours required to lay 717.17 m2
of carpet on various floor units.

CPCCBC5003A 4
From the above calculation, it will take 0.2 days to fix 1 m2 of carpet. Therefore the number of
labour days needed to fix 717.17 m2 of carpet are
1 m2 → 0.2 days
717.17 m2 → 717.17 x 0. 2
1 =143. 4 34 days
The next step is to convert the labour days into tradesman hours
Assumption: there are eight working hours in one labour day
Therefore
1 labour day → 8 tradesman hours
14.3434 labour days → 14 3 . 434 x 8
1 =11 4 7 . 5tradesman hours
d) Gang size
Based on the carpet floor area and the tradesman hours calculated above, the reasonable gang
size for the carpet laying task is 2. This means that 2 tradesmen are enough to complete the job
within a reasonable number of days.
e) Completion time
The required time to complete the carpet laying task is calculated based on the recommended
gang size above.
Assumption: 0.15 tradesmen hours are required to fix 1 m2 of carpet. This means that in 1 hour,
the total area of carpet fixed is
0.15 hours = 1 m2
1 hour = 1 x .4
0.15 =6.67 m2
For the two tradesmen (gang size of 2), the total carpet fixed in 1 hour is
2 x 6.67 m2 = 13.33 m2
Therefore