Consider the following project network and activity times (in days).EStartFinishDFGActivity | A B C D EF GTime356.2The crashing data for this project are as follows:Time (days)Cost ($)ActivityNormalCrashNormalCrash8001,2002,000A21,400В211,90032,8001,5001,8002,300E642,8001,0001,000F21600G21500a. Find the critical path and the expected project completion time.b. What is the total project cost using the normal times?Assume that management desires a 12-day project completion time.c. Formulate a linear programming model that can be used to assist with the crashingdecisions.d. What activities should be crashed?e. What is the total project cost for the 12-day completion time?2.

Answered: A E Start Finish B D F G Activity | A А…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Example 2.39 Table 2.119 provides normal and crash times as well as normal and crash costs for the activities of a project. Table 2.119 Project activity details Activity Normal Time (Weeks) Normal Cost (Lakhs) Crash Time (Weeks) 1-2 3 5 2-3 4 8 2-4 3 4 2-5 8 S 3-6 4 3 4-6 6 2 5-7 5 10 6-7 3 7 1 3 2 7 2 4 4 1 Crash Cost (Lakhs) 9 14 6 6 5 3 14 10 Project Network Analysis-1 | 141 (a) Draw the network and find the critical path. (b) Using the above information, crash or shorten the activities step by step until the shortest duration is reached. MMM, VI Sem, Mumbai Univ, 2006
Activity Normal_time Crash_time Normal_cost Crash_cost Slack A 31 17 4800 6200 В 14 14 5500 5500 C 34 18 5100 6600 21 17 4500 6800 E 15 15 5300 5300 F 17 17 5300 5300 The table shows normal time, crash time, normal cost, crash cost and slack time of activities in a project. According to this table which activity must be crashed first? Assume there is only one critical path. (Only type the name of the activity, Example: A. @orsdemir. Copyrighted content. Cannot be posted.) 0ㅇ11 2 0
0Q8
A town is replacing a sidewalk that stretches in front of fivehomes. The sidewalk is 2,000 ft. ●●●●●●●●●●●●●●●●●●●●● Ana's property measures 300 ft. by 800 ft. The town plans to get $25,000 total of special assessments for the project. What is Ana's special assessment? $1.875 $10,000 $3,750 51 500
Activity Preceded By ABCDEFG А ww ww A B,C D E BC F. G Expected Time Regular Crash 6 days 2 day 12 6 4 10 8 C 18 6 2 6 6 2 8 4 Direct Cost Regular Crash $2000 $3800 2000 10000 4000 4600 3900 5000 7600 16000 19600 2000 4000 1000 3400 2800 Requested: (a) Construct a network including the Early and Late Start and Finish times. (b) Identify the normal Critical Path(s) and the normal expected completion time (c) Can the project be crashed to last 18 days? Which activities should be crashed and at what additional cost?
DURATION, DAYS NORMAL ACCELERATED 5 3 5 4 3 2 5 # 3 # 3 ACTIVITY NODE A 0-1 B 0-2 C 0-3 D 1 to 2 E 2 to 3 4 F 3 to 4 5 determine the following: -Normal cost -additional cost -maximum crash time for activity A 7 NORMAL COST, PESO ACCELERATED 1,600.00 4,000.00 15,000.00 3,500.00 1,500.00 1,800.00 1,000.00 € 3,000.00 12,000.00 3,000.00 € 1,000.00 # 1,000.00
c) Total cost of crashing the project by 2 days = $_________ (Enter your response as an integer.)
Please answer all parts.
Use the legend to answer this question.
Given the data table below develop the precedence network and perform the CPM calculations. Then, using the proposed crashing strategy calculate the normal, least-cost, and crash duration for the project below. Calculate the cost associated with each duration. Indirect cost (overhead) is $120 per day. Activity IPA A B E F G H | J A A,B B C,D F E,G H,I Duration Cost $ Normal Crash Normal Crash 5 4 2 4 7 4 6 8 A 3 3 4 5 3 4 3 2 $770 $900 $660 $700 $800 $1,070 $1,000 $1,110 $800 $920 $560 $630 $700 $810 $1,000 $1,260 $500 $580 $400 $600
Activity Normal_time Crash_time Normal_cost Crash_cost Slack 28 22 5800 6700 0 30 4200 4200 1 13 4500 4500 0 25 4300 6700 1 18 5700 6700 2 20 5200 6500 2 AB C D E F 30 13 33 29 Previous 34 The table shows normal time (in days), crash time (in days), normal cost (in dollars), crash cost (in dollars) and slack time (in days) of activities in a small construction project. According to this table which activity must be crashed first? Assume there is only one critical path. (Only type the name of the activity, Example: A. Next
Project Management Homework-Project Crashing Use the following scenario and data to answer all related questions. A community neighborhood association decided to add a swimming pool to the community activity center. The project is divided into the activities listed in the following table. The activity times and costs, both normal and crashed, are given. To finish the project before the summer season starts, the neighborhood has to make time and cost tradeoffs. If the project needs to be finished in 20 weeks, you are required to formulate a linear programming model to decide about how much to crash for each activity. Activity Immediate Predecesso Normal Gs) Cost (5) Cost (5) Crashed Normal Crashed A 4 2 800 1400 B A 5 2 3000 4200 C 6 4 2500 2800 D A, C 7 5 1600 2200 E B, C 5 2 1200 2100 F D 4 3 1300 2100 G E, F 5 3 8200 9000 To answer the following questions, you may want to use the last column of the following table to compute the cost of crashing an activity by one week. Immediate…

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