lndicates Grade 30 mild steel chain.
lndicates left hand lay in a rope construction.
lndicates Lang’s lay in an FSWR rope construction.
A construction method for FSWR where the rope strands are laid in the same direction as the wires.
A short length of synthetic fibre rope used to attach a safety harness or body belt to an anchorage.
LATTICE BOOM CRANE
A crane with an open-web boom, usually in sections. It does not telescope. Sometimes called a ‘pin-jib crane’
The way a rope is constructed.
A block which diverts the line of pull in a winch hauling rope.
The portion of rope between the lead block and the winch drum.
LEFT HAND LAY
A method of rope construction where the strands are laid up in an anti-clockwise direction. Sometimes called an ‘S twist’ because the strands run the same direction as the central part of the letter 's'.
See Chain puller.
A vertical, or near vertical rope to which a safety harness can be attached using a device that will grab the lifeline if the wearer slips.
See plate clamp.
LIGHT DUTY WORKING PLATFORM
A platform on a scaffold with a duty live load capacity of 225kg per bay.
LIGHT GIN TACKLE
See ‘handy billy’
The load being lifted (also called the ‘lifted load’ ) or the load of persons and materials supported by a scaffold platform in each bay.
A moving rope.
LOAD BINDER CHAIN
Chain designed for securing loads to the trays of trucks. It is not designed for lifting.
A manufacturer’s notice fixed to a crane or hoist which specifies the SWLs in all normal operating configurations. It is also called a ‘load plate’ or ‘crane chart’.
The fraction of a sling assembly’s WLL created by a particular slinging method. It includes the angle factor and the reeve factor.
LOAD LIMITING DEVICE
Used with a power-operated scaffolding hoist, which cuts the hoist motor at a pre-set load to avoid overloading the rope or the suspension rig.
LOAD WEIGHT INDICATOR
A device which indicates the weight of the load being lifted.
A method of joining two ropes so that they can travel over sheaves without obstruction.
The bottom block in a tackle or purchase from which the load is suspended.
A fibre rope tackle where the upper block has two sheaves and the lower block has a single sheave (single and double blocks).
Raising or lowering the boom head of a crane.