If the mean time of a project is 10 points10 days with a standarddeviation of 2, what is theexpected time of completion ofthe project with probability99.9% (for Z= 1.59, A=0.444)?O 14.22O 10.3511.1313.18

Answered: expected time o

Engineering

Civil Engineering

expected time o

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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PERT Calculations yield a project length of 45 weeks with a variance of 12.25. The project is expected to complete with a probability of 90% in how many weeks.(Round off to next higher integer) Z Probability 53 Use above table for linear interpolation. 50 52 1.1 51 86.43 1.2 88.49 1.3 90.32
How much interest does a P35,000 investment earn at 5.6% over 28 months? A. P4,573.33 B. P39,573.33 C. P30,426.67 D. P8,573.33
Four activities to be undertaken in series for the completion of a project are as following: Activity Optimistic time (days) Most likely time (days) Pessimistic time (days) A B C D 9 7 10 25 14 21 20 35 21 32 30 42 Estimate the time required at (i) 95% probability (z = 1.647) and (ii) 5% probability to complete the work. Which of the above four activities has the most reliable time estimates?
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
SITUATION 21: The activities, duration and cost under normal and accelerated conditions for a network diagram are shown below. ACTIVITY NODE Duration, Days Costs, Pesos Normal Accelerated Normal Accelerated A 1-2 10 7 3000 3450 2-4 8 6 2600 3400 1-3 6 6 2000 2000 3-5 12 11 4800 5100 2-5 13 10 3900 4500 F 4-5 24 3 2400 2700 G 5-6 2 2 1800 1800 64. Determine the normal duration of the project... a. 20 b. 25 c. 23 d. 22 65. Determine the critical path of the network a. a-e-g b. c-d-g c. a-b-c-d-g d. a-b-f-g 66. Determine the normal cost a. 22950 b. 20500 c. 22250 d. 22550 TMOSBY B с D E -
Question 4: Determine the amount of time in weeks that gives a probability of 97.5% until the seventh event in the following grid, and then find the following: What is the probability of completing the project with a period less than TE by 4 weeks What is the probability of completing the project with a period of more than TE by 2 weeks Act. 1-2 2-3 2-5 2-4 3-4 3-7 5-6 6-7 4-7 0 8 4 7 7 4 7 10 10 4 M 10 5 8 9 6 8 14 14 5 24 12 21 11 8 15 24 24 12
Q2: For the project, its data shown below find: ● Time in weeks that gives a probability of %97.5 Probability of finishing the project 4 weeks more than TE Probability of finishing the project 3 weeks less than TE Act. 1-2 2-3 2-5 2-4 3-4 3-7 5-6 6-7 4-7 0 8 4 7 7 4 7 10 10 4 M 10 5 9 6 8 14 14 5 P 24 12 21 11 8 15 24 24 12
Q/ For the project data in Table below, answer the following questions: a) Draw an AOA network of the project and Perform forward path and backward path calculations with critical path identification? b) What are the effect of delaying activities C by 5 days, G by 3 days and D by 5 days? Duration Immediate Activity (day) predecessor A 9. В 11 A C 6. A D 8 В, С E 6. A F 11 D,E G 7 C H 9. F, G I 7 H J 1 H
Problem 2 From the following table of information: a) Draw the precedence diagram; b) What is the probability that the project can be completed om 24 days or less? In 21 days or less? Activity Precedes Time in days Optimistic Time Most likely Time Pessimistic Time A C 5 6 7 H. 8 11 E 6 11 CIV 417/CPM THE PROBABLE TIME ESTIMATE Activity Precedes Time in days Optimistic Time Most likely Time Pessimistic Time D F 12 15 E END 5 7 10 F G 5 7 G END 3 4 7 H 4 4 END 7 8
Construction Project Management 2021 Homework 1: By using PERT technique, answer all of the following points: 1- Develop the network diagram 2- Define the critical path and the total project duration 3- In which week, the probability of completion the project would be 95% Activity Preceding Activity a, Weeks m, Weeks b, Weeks A 4.5 8.5 9.5 ----- A, C, D 5 7 9. 7.5 8.5 12.5 D G 5 6. 7 E A 8 11 14 F G 10.5 12 13.5 G 10.5 14.5 15.5 H G 11 15 19 I G 8 10 J I 5.5 6. 6,5 В, Е, F В, Е, F, H, J B, E, F, H, J K 11.5 12.5 16.5 L 10.5 12 13.5 M 13 16 19 I 9 10 17 M 16 17.5 22 L, M, N 12 13 14 M 11 14 17 K, O 11.5 15 18,5
Activity A (BCDEFGH 4. For the following schedule, draw the node network, perform the CPM calculations, mark the critical path, and complete the table. с Duration 6 2 8 5 3 6 5 2 Q Search U IPA A A, B B D, E C, D F, G ES O EF 0 LS ** LF TF FF 4 1 F*
6) Construction of a building is based on the following CP network ACTIVITY A B C D E F G PREDECESSOR NORMAL TIME (days) A B,A A B C,D E,F,D 4 8 2 3 5 5 6 NORMAL COST ($) 100 80 40 20 80 100 120 CRASH TIME (days) 2 2 1 2 3 1 2 CRASH COST($) 150 140 60 80 140 160 240 a) Construct the network diagram b) Crash the project by 4 days, showing which activities you would crash and the cost of doing so. c) What is the percentage increase in project costs if the project is crashed by the 4 days