A crane operator was extended his Tadano crane boom(two section of boom out of five) at almost 0 degree boom angle. My question is-Is it safe to lift any load at 0 degree boom angle.
I suppose Tadano is the manufacturer and they make several models most of which are safe at zero degrees with two sections extended. The weight of the extended cable and hook need to be added to the weight being lifted or lowered, so the allowable weight could be zero for a very long cable. Some safety factor is present, so you may choose to push your luck. A cable that breaks suddenly can whip around in a dangerous manner. If you bend the boom replacement will be very costly. If the boom was bent in a previous lift, it is much weaker than an unbent boom and the extending feature may jam. Neil
The answer is yes. The amount of the lift weight depends on the weight of the counter weights on the back of the crane. There is an indicator (printed or electronic) which indicates the maximum lift based on angle and extension. TexMav
