When tower crane is erected/dismantled, written instructions must be - ANSWEROn site
What must the crane operator do when a load is suspended - ANSWERRemain at the controls
How often should the hoist rope be lubricated? - ANSWEREvery 200 hours
If block is twisted, it may be necessary to fix ...
When tower crane is erected/dismantled, written instructions must be - ANSWEROn site
What must the crane operator do when a load is suspended - ANSWERRemain at the controls
How often should the hoist rope be lubricated? - ANSWEREvery 200 hours
If block is twisted, it may be necessary to fix the ______________ and make a few empty runs with
the hook and trolley and then reopen - ANSWERTwist compensator
Tower crane erection/dismantling shall be performed under direct supervision of the -
ANSWERDesignated person
What is the minimum clearance from obstruction when the tower crane freely rotates 360•? -
ANSWER6 ft 6 in
How many wraps shall be on the drum when the block is at its lowest point - ANSWER3
The radius on a crane chart refers to - ANSWERCenter of rotation to center of gravity of load or hook
What would cal for a running rope to be taken out of service - ANSWER12 randomly distributed
broken wires in one lay or 4 in one strand in one lay
maintainence personnel are only permitted to operate crane when - ANSWEROnly when performing
the maintenance duties
If radius is in between On load chart, you should use - ANSWERNext longer radius
If the boom angle is in between On The load chart , you should - ANSWERUse next lower boom angle
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