IWRC

Wire rope core in the construction of an FSWR.

IWS

Wire strand core in the construction of an FSWR.

INBOARD

The portion of a needle or other cantilevered beam between the fulcrum and end anchorage or centre of the counterweights.

INDUSTRIAL GRADE LADDER

A portable ladder designed and manufactured for general industrial use. This is the type of ladder for use in rigging work.

INDUSTRIAL SAFETY NET

A purpose designed net intended to catch a person falling from a building or structure.