L

lndicates Grade 30 mild steel chain.

LH

lndicates left hand lay in a rope construction.

LL

lndicates Lang’s lay in an FSWR rope construction.

LANG’S LAY

A construction method for FSWR where the rope strands are laid in the same direction as the wires.

LANYARD

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’

LAY

The way a rope is constructed.

LEAD BLOCK

A block which diverts the line of pull in a winch hauling rope.

LEAD 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'.

LEVER HOIST

See Chain puller.

LIFELINE

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.

LIFTING CLAMP

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’

LIVE LOAD

The load being lifted (also called the ‘lifted load’ ) or the load of persons and materials supported by a scaffold platform in each bay.

LIVE ROPE

A moving rope.

LOAD BINDER CHAIN

Chain designed for securing loads to the trays of trucks. It is not designed for lifting.

LOAD CHART

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’.

LOAD FACTOR

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.

LONG SPLICE

A method of joining two ropes so that they can travel over sheaves without obstruction.

LOWER BLOCK

The bottom block in a tackle or purchase from which the load is suspended.

LUFF TACKLE

A fibre rope tackle where the upper block has two sheaves and the lower block has a single sheave (single and double blocks).

LUFFING

Raising or lowering the boom head of a crane.