Construction Planning and Management
Latest start of an activity is always

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

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Construction Planning and Management
Free float is mainly used to

Identify the activities which can be delayed without affecting the total float of preceding activity
Establish priorities
Identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
Identify the activities, which can be delayed without affecting the total float of succeeding activity

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

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

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