FAQ >> Question About Tower Crane - 3

Question About Tower Crane - 3

When travelling on a rail-mounted machine; how would you position your working jib? A. Jib side ways over track way B. Travel in reverse C. Jib over track facing direction of travel What would stop your crane from running off the end of a track? A. Limit switch B. End of track safeguard C. Sand bags When should your Trolley ropes be tensioned? A. Yearly B. Weekly C. As per operators manual Where would the operator position the trolley to tension it? A. As close as possible to operators cab B. In the middle of working jib C. At the end of the working jib When adjusting the trolley rope caution should be taken. WHY? A. Because of the height of the job B. Because of the tension in the trolley adjuster C. Both A and B Why would you adjust trolley ratchet a couple of adjustment clicks at a time and operate trolley in between adjustments? A. To stretch job time out B. So you do not over tension trolley rope C. Both A and B Tower cranes can work under special duties and carry out work with grabs according to BS7121? A. True B. False If your trolley rope breaks what would stop the trolley from running away? A. Stops at the end of the jib B. Rope brakeage safety device C. Hit emergency button Why are flat boards positioned on the side of a jib or on the rotating platform? A. To aid the machine to free slew in shutdown mode B. To advertise company name C. Will stop crane from rotating What would stop your trolley from running off the end of a jib? A. Rope breakage safety devise B. Stops at end of the jib C. Radius metre

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