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A construction project consists of twelve activities. The estimated duration (in days) required to complete each of the activities along with the corresponding network diagram is shown below. Activity and duration (days): A Inauguration 1, B Foundation work 7, C Structural construction-1 30, D Structural construction-2 30, E Brick masonry work 25, F Plastering 7, G Flooring 25, H Electrification 7, I Plumbing 7, J Wood work 7, K Coloring 3, L Handing over function 1. The network diagram shows activities A, B, C, D, E, F, G, H, I, J, K, L connecting events 1 to 12, with a dummy activity from 4 to 5. Total floats (in days) for the activities 5-7 and 11-12 for the project are, respectively.

1. 25 and 1
2. 1 and 1
3. 0 and 0
4. 81 and 0

Correct answer: 0 and 0

Solution

The total float for an activity is the amount of time that it can be delayed without affecting the project's overall completion date. In this case, activities 5-7 and 11-12 are on the critical path, meaning any delay in these activities will directly impact the project's finish date, resulting in a total float of 0 for both.

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