7 8 1. A contractor has obtained the contract for a large project which is expected to last for five years. 9 As a scheduling consultant what time interval (unit of time) might you suggest for the base contract schedule? 10 Discuss the reasons for your choice. 11 12 13 2. Show your work and Solve the following: 14 15 a. What is the daily production rate of a 8 person crew consisting of 2 foremen and 6 laborers 16 if each person can install 1,024 square feet of exterior sheathing per day? 17 18 19 each 1024 per day X SF 8 people per crew 8192 per crew day 20 21 b. How many days would it take if the same crew needed to install densglass sheathing on the exterior walls 22 of 8 office buildings with dimensions of 75' wide, 200' long and 20' high? Assume the buildings are rectangular, 23 and the production rate found in (a.) is the same regardless of height. 24 25 88,000 SF entire job 26 200+200+75+75= 550 divided by crew production rate day 10.7422 days 11 12 550*20= 11,000 sf 11,000*8=88,000 SF 27 88,000/8,192 10.7422 days 28 29 c. Using the same duration found in (b.) adjust the overall time if two laborers of the crew 30 failed to show up on the first Friday because they went out with the Super on Thursday and couldn't handle it... 31 How many days are lost, or hours, using 8 hour work days if the original work started on a Monday? 32 33 34 35 36 37 d.Continuing with the same example, it rains the crew out for 3 days (M,T,W of week 2), are there enough weekend 38 days to make up the lost time (including (c.)) if trying to achieve the original finish date found in (b.)? 39 Why or why not? (Show your work) Would you, as the project manager, implement this make up? 40 What are some of the factors involved in making such a decision? 41 42 43 44

Fundamentals Of Construction Estimating
4th Edition
ISBN:9781337399395
Author:Pratt, David J.
Publisher:Pratt, David J.
Chapter9: Pricing Construction Equipment
Section: Chapter Questions
Problem 7RQ
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Question
7
8 1. A contractor has obtained the contract for a large project which is expected to last for five years.
9 As a scheduling consultant what time interval (unit of time) might you suggest for the base contract schedule?
10 Discuss the reasons for your choice.
11
12
13 2. Show your work and Solve the following:
14
15 a. What is the daily production rate of a 8 person crew consisting of 2 foremen and 6 laborers
16 if each person can install 1,024 square feet of exterior sheathing per day?
17
18
19
each
1024 per day
X
SF
8 people
per crew
8192
per crew day
20
21 b. How many days would it take if the same crew needed to install densglass sheathing on the exterior walls
22 of 8 office buildings with dimensions of 75' wide, 200' long and 20' high? Assume the buildings are rectangular,
23 and the production rate found in (a.) is the same regardless of height.
24
25
88,000 SF
entire job
26
200+200+75+75=
550
divided by
crew production rate day
10.7422 days
11
12
550*20=
11,000 sf
11,000*8=88,000 SF
27 88,000/8,192 10.7422 days
28
29 c. Using the same duration found in (b.) adjust the overall time if two laborers of the crew
30 failed to show up on the first Friday because they went out with the Super on Thursday and couldn't handle it...
31 How many days are lost, or hours, using 8 hour work days if the original work started on a Monday?
32
33
34
35
36
37 d.Continuing with the same example, it rains the crew out for 3 days (M,T,W of week 2), are there enough weekend
38 days to make up the lost time (including (c.)) if trying to achieve the original finish date found in (b.)?
39 Why or why not? (Show your work) Would you, as the project manager, implement this make up?
40 What are some of the factors involved in making such a decision?
41
42
43
44
Transcribed Image Text:7 8 1. A contractor has obtained the contract for a large project which is expected to last for five years. 9 As a scheduling consultant what time interval (unit of time) might you suggest for the base contract schedule? 10 Discuss the reasons for your choice. 11 12 13 2. Show your work and Solve the following: 14 15 a. What is the daily production rate of a 8 person crew consisting of 2 foremen and 6 laborers 16 if each person can install 1,024 square feet of exterior sheathing per day? 17 18 19 each 1024 per day X SF 8 people per crew 8192 per crew day 20 21 b. How many days would it take if the same crew needed to install densglass sheathing on the exterior walls 22 of 8 office buildings with dimensions of 75' wide, 200' long and 20' high? Assume the buildings are rectangular, 23 and the production rate found in (a.) is the same regardless of height. 24 25 88,000 SF entire job 26 200+200+75+75= 550 divided by crew production rate day 10.7422 days 11 12 550*20= 11,000 sf 11,000*8=88,000 SF 27 88,000/8,192 10.7422 days 28 29 c. Using the same duration found in (b.) adjust the overall time if two laborers of the crew 30 failed to show up on the first Friday because they went out with the Super on Thursday and couldn't handle it... 31 How many days are lost, or hours, using 8 hour work days if the original work started on a Monday? 32 33 34 35 36 37 d.Continuing with the same example, it rains the crew out for 3 days (M,T,W of week 2), are there enough weekend 38 days to make up the lost time (including (c.)) if trying to achieve the original finish date found in (b.)? 39 Why or why not? (Show your work) Would you, as the project manager, implement this make up? 40 What are some of the factors involved in making such a decision? 41 42 43 44
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