Question: The table below lists activities for constructing a bridge over an operational railway line: (a) Construct a network diagram for the project (b) Do forward

The table below lists activities for constructing a bridge over an operational railway line: Activity Number A BCDEF D G Activity Description Detail site investigation and

survey Detail Planning Detail design Preparation of site Relocate services Re-align overhead

(a) Construct a network diagram for the project

(b) Do forward and backward pass calculations to indicate early and late start and finish times

(c) Indicate the critical path

(d) Indicate the total and free slack of each activity

Activity Number A BCDEF D G Activity Description Detail site investigation and survey Detail Planning Detail design Preparation of site Relocate services Re-align overhead track electrification Access road and ramp Duration (Months) Predecessors H J K L construction Piling Construct foundations and abutments Construct temporary supports to support bridge deck during construction Fabrication planning of structural steel components 2 66434 A B C C C, E 1 D 23 G CH 2 F, G 2 C (Continued)

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