Construction Planning and Management
In the given figure, the network of a project represents

Activity of an excavation which starts at event No. 1 and ends at even No. 2
Activity of excavation which takes 8 units of time
None of these
Activity of an excavation of a footing

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Construction Planning and Management
In time-cost optimization of a project, crashing is done.

On original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
On all the activities
Only on activities lying on the original critical path and having flatter cost slopes
On all the activities lying on the critical path

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Construction Planning and Management
Mobilization advance up to 10% of the cost of work is given to a contractor

For all activities required to start the work at site on finalization of the contract document
For the purchase of construction materials
For the payment of advances to labour and other staff
On commencement of work at site for payment of loan taken by him

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