Sunday, September 30, 2007

Selection of Tower Crane

Selection Criteria for Tower Cranes
The choice and utilization of a tower crane requires considerable planning. It showed reach from its fixed position to all locations from which loads are to be lifted and placed. Therefore, when selecting a crane for a particular project, the engineer must ensure that the weight of the expected loads can be handled at their corresponding required radius.

Tower cranes are selected for use based on factors such as:

  1. Weight, dimensions, lift height and radius of the heaviest loads

  2. Frequency and duration of usage

  3. Maximum free-standing height of the crane

  4. Maximum braced height of the crane

  5. Machine-climbing arrangement

  6. Weight of crane supported by the structure

  7. Available headroom which can be developed

  8. Area which must be reached

  9. Hoisting speed of the crane

  10. Length of cable that the hoist drum can carry

  11. Other normal procurement factors such as price, reputation and service back-up of manufacturer/ agent