Question: 1. The table on the next page lists activities for constructing a bridge over an operational railway line: a. Construct a network diagram for

1. The table on the next page lists activities for constructing a bridge over an operational railway line: a. Construct a network diagram for

1. The table on the next page lists activities for constructing a bridge over an operational railway line: 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 Activity Description Duration (Months) Predecessors Detail site investigation and survey 2 A BUDER Detail Planning C Detail design D Preparation of site F Relocate services Re-align overhead track electrification G Access road and ramp construction H Piling J K L M N POR S T D U V W XXX XNX Construct foundations and abutments Construct temporary supports to support bridge deck during construction Fabrication planning of structural steel components Manufacture structural steel components (off-site) Transport structural steel components and erect on-site Erect pylons and fill with concrete Construct main span deck on pre-cast concrete beams Install cable-stays and lift deck off temporary supports Remove temporary supports Electrical system installation Roadway surfacing (paving) Finishing and ancillaries Commissioning-cut-over Formal hand-over and 6643+ A B C C C, E 1 D 23 2 3 2 CHS G F,G 2 C 2 L M 2 33 3 J H, K, N, P Q 1 1 RS 2 S 211 T, U V W ceremony Y Project Sign-off 1 X Administrative closure 1 W AA Project End 0 (milestone) Y, Z

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