8/31/26, 3:12 PM Quiz: Estimates, Construction Contract Administration, Machine Power: ENGV380: Project and Construction Management (B03)
Quiz: Estimates, Construction Contract
Administration, Machine Power
Due Jun 29 at 11:59pm
Points 100
Questions 8
Time Limit 60 Minutes
This quiz is no longer available as the course has been concluded.
Attempt History
Attempt Time Score
LATEST Attempt 1 60 minutes 95 out of 100
(@ Correct answers are hidden.
Score for this quiz: 95 out of 100
Submitted Jun 27 at 2:41pm
This attempt took 60 minutes.
Question 1
12.5/12.5 pts
Contractors submit pay estimates monthly. Some contractors "front load" their bids, and
hence their pay estimates. What is front loading? Is it an ethical or an unethical practice?
Your Answer:
When a contractor gives disproportionately high pricing to work accomplished early in the
project and lower costs to work completed later, while maintaining the same overall bid amount,
this is known as front loading. This lowers the amount of working capital the contractor must
supply and enables the contractor to get more money in the early phases of construction.
Since early compensation projections do not fairly reflect the true worth of the job
accomplished, front loading is typically seen as an immoral practice. If the contractor fails or the
agreement is dissolved before it is finished, the owner may suffer financial loss. While some
owners may accept a negotiated schedule of values and front loading may not always be
prohibited, it is deceptive and against fair contractual practices to purposefully manipulate bid
items in order to get payment before the corresponding value has been achieved.
You gave a clear and accurate definition of front loading. You correctly explained that it
involves assigning higher prices to early project work and lower prices to later work while
keeping the overall bid amount the same. You also discussed both the contractor cash-
https://canvas.liberty.edu/courses/1026043/quizzes/4769830?module_item_id=105618490 1/8
, 8/31/26, 3:12 PM Quiz: Estimates, Construction Contract Administration, Machine Power: ENGV380: Project and Construction Management (B03)
flow benefit and the ethical concern that the owner may pay more than the actual value
of work completed early. Full credit.
Question 2
12.5/12.5 pts
Estimate the labor and equipment cost component for placing the 37.5 cy of wall
concrete using a concrete pump. Use the estimated labor production rates of Table 6.7
(Concrete work task production data) and the estimated labor rates of Table 6.8 (Labor
rate analysis). The wall will be constructed in two equal parts so that only half the
required formwork material will have to be purchased (two uses of the wall forms The
vibrators will cost $5.24 per hr and the combined 0&O cost for the pump is $80 per hr.
Your Answer:
Given: 37.5 cy concrete; production = 100 cy per 8 hr; total placement time 37.5/12.5= 3 hr.
Crew rates from Table 6.8:
Labor Hourly Cost
1 labor foreman $20.50/hr
5 laborers 5x$12.10 = $60.50/hr
1 cement mason $17.00/hr
1 pump operator $16.00/hr
1. Time
100cy +8hr=12.5cy/hr
37.5¢cy+12.5cy/hr=3 hr
2. Labor cost
$20.50 + $60.50 + $17.00 + $16.00 = $114.00/hr
$114.00 x 3 hr = $342.00
3. Equipment cost
Vibrators: 2 x $5.24 x 3 hr = $31.44
Pump: $80.00 x 3 hr = $240.00
Equipment total = $31.44 + $240.00 = $271.44
https://canvas.liberty.edu/courses/1026043/quizzes/4769830?module_item_id=105618490 2/8
Quiz: Estimates, Construction Contract
Administration, Machine Power
Due Jun 29 at 11:59pm
Points 100
Questions 8
Time Limit 60 Minutes
This quiz is no longer available as the course has been concluded.
Attempt History
Attempt Time Score
LATEST Attempt 1 60 minutes 95 out of 100
(@ Correct answers are hidden.
Score for this quiz: 95 out of 100
Submitted Jun 27 at 2:41pm
This attempt took 60 minutes.
Question 1
12.5/12.5 pts
Contractors submit pay estimates monthly. Some contractors "front load" their bids, and
hence their pay estimates. What is front loading? Is it an ethical or an unethical practice?
Your Answer:
When a contractor gives disproportionately high pricing to work accomplished early in the
project and lower costs to work completed later, while maintaining the same overall bid amount,
this is known as front loading. This lowers the amount of working capital the contractor must
supply and enables the contractor to get more money in the early phases of construction.
Since early compensation projections do not fairly reflect the true worth of the job
accomplished, front loading is typically seen as an immoral practice. If the contractor fails or the
agreement is dissolved before it is finished, the owner may suffer financial loss. While some
owners may accept a negotiated schedule of values and front loading may not always be
prohibited, it is deceptive and against fair contractual practices to purposefully manipulate bid
items in order to get payment before the corresponding value has been achieved.
You gave a clear and accurate definition of front loading. You correctly explained that it
involves assigning higher prices to early project work and lower prices to later work while
keeping the overall bid amount the same. You also discussed both the contractor cash-
https://canvas.liberty.edu/courses/1026043/quizzes/4769830?module_item_id=105618490 1/8
, 8/31/26, 3:12 PM Quiz: Estimates, Construction Contract Administration, Machine Power: ENGV380: Project and Construction Management (B03)
flow benefit and the ethical concern that the owner may pay more than the actual value
of work completed early. Full credit.
Question 2
12.5/12.5 pts
Estimate the labor and equipment cost component for placing the 37.5 cy of wall
concrete using a concrete pump. Use the estimated labor production rates of Table 6.7
(Concrete work task production data) and the estimated labor rates of Table 6.8 (Labor
rate analysis). The wall will be constructed in two equal parts so that only half the
required formwork material will have to be purchased (two uses of the wall forms The
vibrators will cost $5.24 per hr and the combined 0&O cost for the pump is $80 per hr.
Your Answer:
Given: 37.5 cy concrete; production = 100 cy per 8 hr; total placement time 37.5/12.5= 3 hr.
Crew rates from Table 6.8:
Labor Hourly Cost
1 labor foreman $20.50/hr
5 laborers 5x$12.10 = $60.50/hr
1 cement mason $17.00/hr
1 pump operator $16.00/hr
1. Time
100cy +8hr=12.5cy/hr
37.5¢cy+12.5cy/hr=3 hr
2. Labor cost
$20.50 + $60.50 + $17.00 + $16.00 = $114.00/hr
$114.00 x 3 hr = $342.00
3. Equipment cost
Vibrators: 2 x $5.24 x 3 hr = $31.44
Pump: $80.00 x 3 hr = $240.00
Equipment total = $31.44 + $240.00 = $271.44
https://canvas.liberty.edu/courses/1026043/quizzes/4769830?module_item_id=105618490 2/8
