Estimating Total Labor Cost

The assignment content describes a project that involves estimating the time required for each unit of work, calculating the total labor hours, and determining the bid price based on architectural and engineering costs. It also discusses the AoN (Activity On Node) diagram and calculates the start, finish, early start, and late finish dates for various tasks.

2.1
a) The following formula is used:
Time required for the nth unit = T×Ln
Time required for the 8th unit = 2400 x (0.8)8
= 402.65 hrs
b) Total labor hours for eight systems: 8469.387 hrs
Units Hours
1 2400
2 1536
3 1228.8
4 983.04
5 786.432
6 629.145
6
7 503.316
5
8 402.653
2
Total
Hrs
8469.38
7
c) $ 9,451,531 should be the bid which includes $ 1270408 of architectural and engineering cost
(that is labor cost).
Units Hours
1 2400
2 1536
3 1228.8
4 983.04
5 786.432
6 629.145
6
7 503.316
5
8 402.653
2
Total Hrs 8469.38
7
Labor per Hr ($) 150
Total Labor Cost 1270408

Software & Licensing
($750,000*8)
6000000
Total 7270408
Add Profit 30% 9451531
d) Total cost will change to $7,538,119
Units Hours
1 2400
2 1734
3 1473.9
4 1252.81
5
5 1064.89
3
6 905.158
8
7 769.385
8 653.977
3
Total Hrs 10254.1
3
Labor per Hr ($) 150
Total Labor Cost 1538119
Software & Licensing
($750,000*8)
6000000
Total 7538119
e) The bid should be $ 14044975
Units Hours
1 2400
2 1734
3 1473.9
4 1252.815
5 1064.893
6 905.1588
7 769.385
8 653.9773
9 555.8807
10 472.4986
11 401.6238
12 341.3802
Total Hrs 12025.51

Labor per Hr ($) 150
Total Labor Cost 1803827
Software & Licensing
($750,000*12) 9000000
Total
1080382
7
Add Profit 30%
1404497
5

2.2
a) AoN Diagram Below:
b)
Task Duratio
n
Start Finis
h
Predecessors Early
Start
Early
Finish
Total
Float
Free
Float
a 1 day Mon
17-
10-
16
Mon
17-10-
16
Mon
17-10-
16
Mon
17-10-
16
0 0
b 1 day Tue
18-
10-
16
Tue
18-10-
16
1 Tue
18-10-
16
Tue
18-10-
16
2 2
c 3 days Tue
18-
10-
16
Thu
20-10-
16
1 Tue
18-10-
16
Thu
20-10-
16
0 0
d 3 days Fri
21-
10-
16
Tue
25-10-
16
2,3 Fri 21-
10-16
Tue
25-10-
16
0 0
e 1 day Fri
21-
10-
Fri
21-10-
16
3 Fri 21-
10-16
Fri 21-
10-16
2 2

16
f 2 days Fri
21-
10-
16
Mon
24-10-
16
3 Fri 21-
10-16
Mon
24-10-
16
1 1
g 3 days Wed
26-
10-
16
Fri
28-10-
16
5,6,4 Wed
26-10-
16
Fri 28-
10-16
0 0
h 2 days Mon
31-
10-
16
Tue
01-11-
16
7 Mon
31-10-
16
Tue
01-11-
16
0 0
c)

2.3
a.
b.
Task
Name Early Start Early Finish Late Start Late Finish Total
Float
Free
Float
Start Mon 17-10-16 Mon 17-10-16 Mon 17-10-16 Mon 17-10-16 0 days 0 days
A Mon 17-10-16 Fri 28-10-16 Wed 19-10-16 Tue 01-11-16 2 days 2 days
B Mon 17-10-16 Tue 18-10-16 Mon 24-10-16 Tue 25-10-16 5 days 0 days
C Wed 19-10-16 Tue 25-10-16 Wed 26-10-16 Tue 01-11-16 5 days 5 days
D Mon 17-10-16 Tue 18-10-16 Tue 18-10-16 Wed 19-10-
16 1 day 0 days
E Wed 19-10-16 Mon 24-10-16 Thu 20-10-16 Tue 25-10-16 1 day 0 days
F Tue 25-10-16 Mon 31-10-16 Wed 26-10-16 Tue 01-11-16 1 day 1 day
G Mon 17-10-16 Fri 21-10-16 Mon 17-10-16 Fri 21-10-16 0 days 0 days
H Thu 20-10-16 Mon 24-10-16 Thu 20-10-16 Mon 24-10-16 0 days 0 days
I Tue 25-10-16 Tue 01-11-16 Tue 25-10-16 Tue 01-11-16 0 days 0 days
End Tue 01-11-16 Tue 01-11-16 Tue 01-11-16 Tue 01-11-16 0 days 0 days
c. 12 days
d. G, H, and I
E