Q/A construction project has the proportion of high-risk, then suppose that the optimistic, pessimistic and most likely time schedules are desired for each activity as shown in table below. Determine: 1) the probability that the project require more than 33 weeks. 2) find the number of weeks required to complete the project with probability 80%. Activity 1-2 1-3 1-4 2-5 3-5 3-6 4-6 4-7 5-6 Optimistic Duration (Weeks) 6 3 4 6 3 3 0 6 5 Most Likely Duration (Weeks) 9 5 8 9 6 5 0 9 8 Pessimistic Duration (Weeks) 15 7 12 12 9 7 0 12 11

Q/A construction project has the proportion of high-risk, then suppose that the optimistic, pessimistic and most likely time schedules are desired for each activity as shown in table below. Determine: 1) the probability that the project require more than 33 weeks. 2) find the number of weeks required to complete the project with probability 80%. Activity 1-2 1-3 1-4 2-5 3-5 3-6 4-6 4-7 5-6 Optimistic Duration (Weeks) 6 3 4 6 3 3 0 6 5 Most Likely Duration (Weeks) 9 5 8 9 6 5 0 9 8 Pessimistic Duration (Weeks) 15 7 12 12 9 7 0 12 11

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Assume the following project data given in Table 2. It is required to crash the project duration from its original duration. Assume Indirect (overhead) costs are $120 per day. Draw the network diagram by using AON method Calculate the normal duration and Normal project cost Least-cost and optimum point/durations for the project. Show the relationship between time and cost Graphically. Activity Preceded by Duration (days) Cost (Birr) Normal Crash Normal Crash A - 5 4 500 600 B A 7 5 350 500 C A 8 5 800 920 D A 11 7 1200 1400 E B,C 6 4 600 700 F C 4 4 500 500 G D,F 7 5 700 1000 H E,F 6 5 300 420
Q2) A precedence diagram network is shown below. The To, Tm, Tp durations are shown for each activity. What is the probability (in percent) of completing the project in 7O days? F 15, 20, 25 9, 13, 20 20, 26, 33 H. 2,4,6 5, 6, 7 E G 15, 18, 28 19, 22, 26 10, 17, 26
question :- a sequence of four tasks is part of the project schedule. each of the four activities has a finish-start relationship with the next and each has one day of total float. currently, activity one and two have been completed on schedule. how many days of float remain in the schedule of these tasks?
The AON (activity on node) scheduling network diagram and associated data are given below. As part of the time-cost tradeoff process, which activity(s) would you shorten to reduce the project duration by one time unit? What is the total project direct cost with the reduced project duration?
The delay time in starting or finishing an activity without affecting on the total duration of a project is known as: * Interfering float Duration O Free float O Total float
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Example Consider a small project that involves the following activities. Completion Times (days) Preceding Activity Activity Optimistic (to) Most Likely (tm) Pessimistic (tp) A 6 7 4 18 a 4 15 20 D b, c 4 5 E a 16 18 1. Determine the mean value of time and the variance for each activity. 2. Use the expected times from (a) to find the critical path. 3. Determine the probability of completing the project in 18 days 4. Determine the probability of completing the project in 26 days
in order to reduce the duration * of a project Increase its cost by using less labour and equipment or decrease its quality of work. Increase its cost by using more labour and equipment Decrease its cost by using more labour and equipment or increase its quality of work. Increase its cost by using more labour and equipment or decrease its quality of work
According to a construction company plan, a project must be implemented in three consecutive stages during six months. The chance that the first stage is completed on time is (0.5). The chance that the second stage is completed on time is (0.3) given that the first stage is completed on time. The chance that the third stage is completed on time is (0.2) given that both the first and the second stages are completed on time. Accordingly, the probability will be equal to (1) when all three stages .are completed on time True O False O
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