Tower Crane Exam Questions with Correct Answers

Self-Erecting Tower Cranes(Planning) Correct Answer Plan divided into two major sections (1)Delivery, set up, erection and dismantle (2)Lifting Operations Self-Erecting Tower Cranes(Delivery, Set-up, Erection and Dismantle) Correct Answer *Complete a site visit(checking for horizontal/vertical clearances, weight restrictions, power lines etc) *Soil report must be reported prior to crane set-up(machines are usually set up on outriggers) *Requirements of FAA standard 7460-1 must be met for any obstruction 200ft in height from ground level *Most self-erecting cranes require 3 phrase electric service (May need to Contact the power company if you plan on using their service or If using a generator contact the crane manufacturer for the required kW rating) *Some self-erecting tower crane control systems require that the power supply to the control panel be left on at all times to ensure a stable temperature for the electronics. In this case, the power from a generator may not be desirable. *Self-erecting tower cranes are required to weather vane (point downwind) when out of service. *Proper clearances (crane and load) must be allowed for during erection (including unfolding), operation, and dismantling (including folding). Lifting Operations Correct Answer *This section of the plan would identify staging and lay down areas. It is important to have accurate load weights and radii to ensure the crane has sufficient load ratings to do the work. *Rigging methods and materials would be addressed here as well as signaling methods. In addition rigger and signalperson qualifications should be set forth. The crane manufacturer's, or qualified person's, requirements for in-service wind should be noted in the plan. Set-Up Correct Answer *Self-erecting tower crane set-up includes preparing the foundation, placing the crane on the foundation and connecting the electric service. *(See Page 65 in PDF for diagram)