Question
General Foundrys project crashing data are shown in the following table. Set up and solve an LP model using Excel to crash this project into
General Foundry’s project crashing data are shown in the following table. Set up and solve an LP model using Excel to crash this project into 10 weeks. How much does it cost to reduce the duration of this project from 15 to 10 weeks? EXPLAIN WHERE YOU GOT CONSTRAINTS AND USE TEMPLATE BELOW.
Time (weeks) | Cost | Crash cost per week | ||||||||||||||||||
Activity | Immediate Predecessors | Standard | Crash | Standard | Crash | |||||||||||||||
A | - | 2 | 1 | 22000 | 22750 | 750 | ||||||||||||||
B | - | 3 | 1 | 30000 | 34000 | 2000 | ||||||||||||||
C | A | 2 | 1 | 26000 | 27000 | 1000 | ||||||||||||||
D | A, B | 4 | 3 | 48000 | 49000 | 1000 | ||||||||||||||
E | C | 4 | 2 | 56000 | 58000 | 1000 | ||||||||||||||
F | C | 3 | 2 | 30000 | 305000 | 500 | ||||||||||||||
G | D, E | 5 | 2 | 80000 | 84500 | 1500 | ||||||||||||||
H | F, G | 2 | 1 | 16000 | 19000 | 3000 | ||||||||||||||
Using EST: | ||||||||||||||||||||
Act | Pred | Time | Cost | Cost/Pd | EST | EFT | LST | LFT | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
A | - | |||||||||||||||||||
B | A | |||||||||||||||||||
C | A | |||||||||||||||||||
D | B, C | |||||||||||||||||||
E | C | |||||||||||||||||||
F | D, E | |||||||||||||||||||
Budget per week = | ||||||||||||||||||||
Cumulative budget = | ||||||||||||||||||||
Using LST: | ||||||||||||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |||||||||
A | ||||||||||||||||||||
B | ||||||||||||||||||||
C | ||||||||||||||||||||
D | ||||||||||||||||||||
E | ||||||||||||||||||||
F | ||||||||||||||||||||
Budget per week = | ||||||||||||||||||||
Cumulative budget = |
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Managerial Decision Modeling With Spreadsheets
Authors: Nagraj Balakrishnan, Barry Render, Jr. Ralph M. Stair
3rd Edition
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