In CPM scheduling, what is the primary purpose of calculating late start and late finish times?
Correct Answer
C) To identify activities that can be delayed without affecting project completion
Late start and late finish times are calculated during the backward pass to determine how much each activity can be delayed without affecting the project completion date. This helps identify float and scheduling flexibility.
Why This Is the Correct Answer
Late start and late finish times are calculated during the backward pass of CPM scheduling to determine the latest an activity can start or finish without delaying the overall project completion. This calculation reveals the total float or slack time available for each activity. Activities with zero float are on the critical path and cannot be delayed, while activities with positive float have scheduling flexibility. This information is crucial for project managers to understand which activities have wiggle room in the schedule.
Why the Other Options Are Wrong
Option A: To calculate the total project budget
Late start and late finish times are purely schedule-related calculations and have no direct relationship to project costs or budget calculations.
Option B: To establish the minimum duration for each activity
Activity durations are predetermined based on resource requirements, work scope, and historical data - they are not calculated using late start and late finish times.
Option D: To determine the earliest possible project completion
Early start and early finish times (calculated during the forward pass) are used to determine the earliest possible project completion, not late start and late finish times.
Memory Technique
Think 'LATE = LATEST without being LATE for the project' - late times show the latest you can start/finish without making the whole project late.
Reference Hint
Look up CPM (Critical Path Method) scheduling in construction management chapters, specifically sections on forward/backward pass calculations and float analysis.
More Business & Finance Questions
A general contractor purchases equipment worth $45,000 with a useful life of 9 years and no salvage value. Using straight-line depreciation, what is the annual depreciation expense?
What is the typical recommended coverage amount for general liability insurance for a small to medium-sized general contracting business?
A contractor estimates startup costs of $75,000 for equipment, $25,000 for initial inventory, $15,000 for insurance premiums, and $10,000 for working capital. They can finance 70% of the total. How much cash do they need?
When establishing professional relationships with architects and engineers, what is the most important factor for a general contractor to consider?
A partnership agreement for a construction company should address all of the following EXCEPT:
A contractor purchases a truck for $60,000. After 5 years, it has accumulated depreciation of $35,000. What is the truck's book value?
A contractor's business plan projects first-year revenue of $500,000 with a 15% net profit margin. If actual revenue is $450,000 with the same profit margin, what is the variance in net profit?
Using the Modified Accelerated Cost Recovery System (MACRS), construction equipment is typically depreciated over how many years?
A contractor is comparing financing options for equipment purchase. Option A: $80,000 cash purchase. Option B: $20,000 down, $65,000 financed at 6% for 4 years. What is the total cost of Option B?
A contractor purchases equipment using a capital lease with a present value of $120,000. How should this be recorded on the balance sheet?