CPCCBC5003A: Assessment 5

Running head: CPCCBC5003A: ASSESSMENT 5 1
CPCCBC5003A: ASSESSMENT 5
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CPCCBC5003A: ASSESSMENT 5 2
1. Two Tasks
a. Accurate measured material quantities using appropriate units of measurement for
the item of work
Trade Groundworks
Task: Groundworks
Volume excavated = 12.8 x 36 x (11.90- 05.90) + 12.8 x 14.85 x (05.90-04.40)
= 2764.8 + 285.12 = 3049.92 m3
Total quantity = 3049.92 m3
Trade Carpet
Task: Carpet to units and common areas
There are 4 levels covered by carpet in the units and common areas
Area of the carpet in level 2 = 2[(5550 x 2050) + (4350 x 1512) + (5910 x 2054) + (5640 x
2854)] = 92380800/1000000 = 92.39 m2
Area of the carpet in level 3 = 2[(5550 x 2050) + (4350 x 1512) + (5910 x 2054) + (5640 x
2854)] = 92380800/1000000 = 92.39 m2
Area of the carpet in level 4 = 2[(5550 x 2050) + (4350 x 1512) + (5910 x 2054) + (5640 x
2854)] =92380800/1000000 = 92.39 m2
Area of the carpet in level 5 = 2[(5550 x 2050) + (4350 x 1512) + (5910 x 2054) + (5640 x
2854)] = 92380800/1000000 = 92.39 m2

CPCCBC5003A: ASSESSMENT 5 3
Total Quantity = 369.56 m2
b. Appropriate productivity constants for the item of work
According to the Rawlinson’s Australian Construction Handbook (2017)
The productivity constant for groundworks = 2.2 labour hrs. /m3
The productivity for carpeting = 0.80 labour hrs. /m2
c. Tradesman hours worked
Groundworks
Tradesman hours worked = productivity constant x quantity
Tradesman hours worked for groundworks = 1.2 labour hrs. /m3 x 3049.92 m3
= 3659.9 tradesman hrs.
Carpet to Level 2
Tradesman hours worked for carpeting to level 2 = 0.80 labour hrs. /m2 x 92.39m2
= 73.91 tradesman hrs.
d. Suitable Gang Sizes
Groundwork
From the program schedule
Gang size = quantity/ (scheduled working period x product constant x working hrs. per day)

CPCCBC5003A: ASSESSMENT 5 4
From schedule groundworks = 20 days
Assuming 8 hrs. working period per day
Gang size for groundwork = 3049.92 m3 / (20 x 1.2 x 8) = 15.89 = 16
Thus a gang size of 16 is suitable for Grounds work
Carpeting to Level 2
From scheduled Carpet to Level 2 = 8 day
Assuming 8 working hrs. per day
Total hours scheduled = 32 x 8 = 256 hrs.
Suitable gang for carpeting = 92.39 m2 / (8 x 0.8 x 8) = 1.8 = 2
Therefore a gang size 2 tradesmen is suitable for carpeting to Level 2
e. Time Needed To Complete The Task.
Time needed to complete task = quantity/productivity constant/gang size/working hrs. per day
Time needed to complete grounds work = 3049.92 m3 /1.2 m3 per hr. /16 tradesmen / 8hrs per
day = 19.85 = 20
Thus time needed to complete ground work = 20 days
Time needed to complete carpeting = 92.39 m2/ 0.80 m2 per hr./2 tradesmen/8 hrs. per day
= 7.2 = 7.5 days
Thus time needed to complete carpeting to level = 7.5 days