Construction Planning and Management
Latest start of an activity is always

greater than or equal to latest event time of preceding node
less than latest event time of preceding node
equal to latest event time of preceding node
less than or equal to latest event time of preceding node

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Construction Planning and Management
Whenever an activity has zero total float, then

Free float and independent float both need not be zero
Free float and independent float both must be zero
Independent float must be zero but free float need not be zero
Free float of the activity must be zero but independent float need not be zero

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Construction Planning and Management
During the construction period, price variation clause in contracts caters to

Variation in total cost of the project on an ad hoc basis
Variation in cost in materials element, labour element and petrol-oil-lubricant element
Increase in rates of only important materials
Rate of inflation

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