The following data were obtained from a project to
expand a school: Activity | Duration | Predecessors | Resources / cost |
A | 2 Weeks | — | 2 Excavators/$800 day each |
B | 3 Weeks | — | 2 Dump Trucks/$600 day each |
C | 2 Weeks | B | 2 Concrete Mixers/$250 day each |
D | 3 Weeks | A, C | 2 Cranes/$2,000 day each |
E | 2 Weeks | B | 1 High-lift/$500 day each |
F | 1 Weeks | B | 2 Excavators/$800 day each |
G | 3 Weeks | F | 2 Cranes/$2,000 day each |
The contractor has access to the
listed quantity of machines of each type available at the listed cost
‘each’. The operations cannot be split. Additional equipment can be rented
at a 50% cost premium if needed.
(a) Identify any resource conflicts in the above project. State
the activities involved, the time frame of the conflict(s), the resources in
conflict and the quantity of resource involved.
(b) What is the least cost method of resolving the
conflict(s), assuming the project duration must not be extended? What
additional cost, if any, will be incurred?