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CAPM Practice: Demonstrate an understanding of a project management plan schedule

Question 31 of 85 in Demonstrate an understanding of a project management plan schedule

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A project manager is managing a construction project. Concrete curing requires 7 days before the next activity can begin. In the project schedule, this waiting period is represented as:

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Correct answer: A lag of 7 days on the Finish-to-Start dependency

Explanation

A lag represents a required waiting period between activities. A Finish-to-Start dependency with a +7 day lag means the successor activity cannot start until 7 days after the predecessor finishes. This correctly models the concrete curing constraint. (A separate curing activity would also work, but a lag is the more concise representation.)

**Why not B:** A lead accelerates a successor activity, allowing it to start before its predecessor finishes. A curing period requires waiting, which is the opposite of acceleration. Using a lead here would incorrectly allow the next activity to start before the curing is complete.

**Why not C:** While creating a separate curing activity with a 7-day duration would technically work, a lag on the dependency is the more concise and standard representation. A separate activity adds unnecessary complexity to the schedule and is not the most efficient modeling approach.

**Why not D:** A milestone marks a significant event or checkpoint but has zero duration. It cannot represent a 7-day waiting period. The curing time is a duration-based constraint between activities, which is properly modeled as a lag, not as a point-in-time milestone.

Key Concept

This question covers Demonstrate an understanding of a project management plan schedule under Demonstrate an understanding of a project management plan schedule (Predictive, Plan-Based Methodologies).

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