Symbol used to indicate a warrington construction in an FSWR.
Working load limit.
Mobiling a load with track mounted cranes.
A powered winch with a dished drum used with a fibre or wire rope which is turned around the drum using friction to lift or haul a load. Also called a ‘capstan winch’.
A multi-layered strand construction method for FSWR where the strand is laid up parallel with alternate large and small wires in one layer.
A flat woven synthetic fibre sling.
WHIP UPON WHIP
A fibre rope tackle with two moveable single blocks and one fixed single block.
A method of preventing the end of a rope from unlaying by securing yarn, marline, twin or wire around it. Forms of whipping used with fibre ropes include Common whipping, American whipping, West-Countryman’s whipping and Palm-and-Needle whipping.
An appliance which provides a means of hoisting or hauling a load.
A single continuous steel filament. In FSWR, a number a wires make up a strand, and several strands form a rope.
WIRE ROPE GRIP
A removable device incorporating nuts and bolts designed to be fixed to FSWR.
A suspended scaffold cradle supported by a single suspension rope. Usually designed for one person.
A crane lifted box designed to carry personnel and provide them with a working platform. Often used to service tower crane booms and during large-scale steel erection.
WORKING LOAD LIMIT
The maximum load which can be applied under general conditions of use to a crane, hoist, rope, chain, sling or item of lifting gear.
The laying of lengths of spun yarn into the valleys between the strands of a rope to make the rope completely circular before it is served.