An architect of a task force planning the construction of a domed stadium had hoped to be able to complete construction prior to the start of the next college football season. After reviewing construction time estimates, it now appears that a certain amount of crashing will be needed to ensure project completion on time. B C A 7 D 3 H F Path Activity Duration (weeks) First Crash Second Crash Top A 5 $8 $10 В 6. 7 C 3 14 15 Middle 11 7 8 9. C 3 14 15 Bottom F 5 10 15 G 5 11 13 H 5 12 14 a. Identify the critical path. Determine which activities should be crashed and the total cost of crashing if the goal is to shorten the project by two weeks as cheaply as possible. b. Following to the result in part (a) above, determine which activities should be crashed further in order to reduce the project duration by one more week. 1.

Case Study for Professional Ethics. During an investigation of a bridge collapse, Engineer A investigates another similar bridge, and finds it to be only marginally safe. He contacts the governmental agency responsible for the bridge and informs them of his concern for the safety of the structure. He is told that agency is aware of this situation and has planned to provide in next year’s budget for its repair. Until then, the bridge must remain open to traffic. Without this bridge, emergency vehicles such as police and fire apparatus would have to use an alternate route that would increase their response time by approximately twenty minutes. Engineer A is thanked for his concern and asked to say nothing about the condition of the bridge. The agency is confident that the bridge will be safe. Analyse the case using the six steps with the perspective of Engineer A.

Find the optimum duration and cost for the projects of a 8 activities? No. Activity Durations and Costs for a Seven Activity Project Minimum Crash Change in Cost per Day *1000$ Normal Crash Activity Pre. Cost*1000 Cost*100 Duration Duration 2$ O$ 1 A 8. 14 4 4 1 4 1 --- C A,B 8 8. 24 4 4 4 D В 10 5 24 7 E ВС, 10 9. 18 6. F C,E 20 12 36 6. 2.7 7 G D 10 3 18 2 8. Solution: Draw the plan---- Find all the paths ---- find the critical path---- start the reduction 3636 8 10 14 26 10

Q/3 B: We have the following network diagram and ask us to shorten the time to achieve the best possible economic feasibility. Find the amount of this time and cost? Act. Normal Crash Time/m Cost S Time/m Cost S 3030 2500 6000 5300 4500/ 2000 4050 1-2 3030 2-3 3 2200 2-4 2. 6000 2-5 3-5 4-5 5-6 5100 4 2. 4100 2000 4050 8. 2250 50

Question 4 - Cost Crashing The durations and direct costs for each activity under both normal and crash conditions are given in the following table. Establish the schedule and the least cost for expediting the contract. Determine the optimum cost of the contract assuming the indirect cost is 125 $/day. 2 3 4 5 6 7 8 9 ID Predecessor(s) 1 1 2 2 3 3,5 6 4,7,8 Normal Duration (days) 12 8 15 23 5 in 5 20 13 12 Cost (S) 7000 5000 4000 5000 1000 3000 6000 2500 3000 Crash Duration (days) 10 12 23 4 4 15 11 10 Cost ($) 7200 5300 4600 5000 1050 3300 6300 2580 3150

Pls right answer and formul. Refer to NSCP 2015 section.

Case Study During an investigation of a bridge collapse, Engineer A investigates another similar bridge, and finds it to be only marginally safe. He contacts the governmental agency responsible for the bridge and informs them of his concern for the safety of the structure. He is told that agency is aware of this situation and has planned to provide in next year’s budget for its repair. Until then, the bridge must remain open to traffic. Without this bridge, emergency vehicles such as police and fire apparatus would have to use an alternate route that would increase their response time by approximately twenty minutes. Engineer A is thanked for his concern and asked to say nothing about the condition of the bridge. The agency is confident that the bridge will be safe. Analyse the case using the six steps with the perspective of Engineer A

PROJEC ILLUSTRATION 8-3 From the following data, perform crashing the project. Cost Cost Time in Weeks Normal Crash Crash 10,000 7,000 3,200 10,0000 5,200 14,000 8,100 9,600 8,000 per week 2,000 Normal 2,000 4,000 2,000 8,000 Activity 1-2-(A) 1-3-(B) 2-4-(C) 3-4-(D) 3-5-(E) 4-6-(F) 5-6-(G) 5-7-(H) 6-7-(i) 600 8 400 7. 4. 500 800 2,000 12 2,000 10,000 6,000 6,000 4,000 7. 3. 700 900 11 1,000 10 6. Total 33 18 P44,000 P75,100 Č=7 F = 3 A = 6 D= 12 G = 5 | = 10 B= 8 E = 7 H = 11 FIGURE 8-5 The normal time Critical Path B-D-F-I is equal to 33 weekS. Direct cost is .....P 44,000 Question: Can we finish the project in 18 weeks instead of 35 weeks at a cost of less than P75,100 in direct cost? SOLUTION: 1. Determine the different path lengths and identify the cine cal path. 190

ES 1 USING NSCP 2015 CODE PLEASE SOLVE THE PROBLEM

9:38 O A O 4 .l 414 4woa9idón4Eqd0c32r5kmr.J. A university is considering two alternative types of bleachers for a new gymnasium. One of the two alternatives will be chosen. Assume that the benefits of the gymnasium are the same for both construction methods. Alternative A: Wooden bleachers on earth fill The first cost of $110.000 for the earth fill and $100.000 for the wooden bleachers. The annual painting costs are $5.000. The wooden bleachers must be replaced every 30 years at a cost of $100,000. The earth fill will last the entire 120 years Alternative B: Concrete Bleachers The first cost is $350,000. The expected life of the concrete bleachers is 120 years and the annual upkeep costs are $2.500 The university Uses a MARR of 7%. Which of the two alternatives is better? Opening in Google Drive.