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Management of Construction Projects by Brian Cooke

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Chapter 6Mechanical Handling and Risk Assessment

6.1 Crane selection factors

Crane selection

The selection of lifting equipment is influenced by:

  • site access conditions and space around the building (especially boundary space situations)
  • form of construction, i.e. steel frames, in-situ concrete or precast frame
  • area or radius to be covered by crane
  • height of building
  • weight of critical loads at maximum radius of crane
  • ground conditions and type of base required for crane
  • lifting restrictions imposed by site location – access for delivery vehicles
  • proximity hazards – overhead power lines or moving loads over adjacent buildings or roads.

Inclusion of plant allowances at tender stage

Plant and equipment is included in this estimate build-up on a time and related fixed cost assessment. A breakdown of the costs is required for valuation purposes.

A major item of plant such as a tower crane would include fixed costs such as:

  • delivery to site
  • provision of crane base
  • erection of crane
  • provision of power and services
  • dismantling of crane.
  • removal from site

and time-related costs:

  • hire of crane and drivers
  • fuel and servicing.

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