12. HOISTING
Hoisting of objects
When lifting long loads make sure that
the load doesn’t slip.
Don’t start the lift before you are sure
the fastening is secure.
Keep the following in mind when
lifting long bars or beams, either one bar
at the time or several in a bundle:
Use two lifting wire ropes or chains.
Make sure the load is balanced.
Bind the lifting strap twice around
the load (double loop) in order
to get a tightening hold of the load.
Use lifting straps that are long enough
so that the free length is at least the
same as the span between the straps
(see picture).
When lifting long loads by using single
lifting strap make low lifts only.
It is recommended to use
a guiding rope or rod.
Sometimes it is necessary to guide
the load by holding it in order to do it
accurately. In that case, make sure that
the load is under your shoulder height.
When lifting short pieces with one
lifting strap, use a tightening double loop
to prevent the strap from slipping. Use
a special cage to lift short pieces.
When you have to lift long pipes with
no flanges vertically, lift each pipe
separately. Use a strap for fastening and
tighten it carefully around the pipe. You
can prevent the pipe from slipping by
welding an additional piece to the pipe
or by fastening a bracket to the pipe.
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