Assertion: stairway's landing | /r/HasProperty | steel
Facets:
Source sentences:
text: (2) All stairways, ladders, elevators, and landings within machinery spaces and cargo holds must be composed of steel; and
text: (3) All stringers, treads, and all platforms and landings of all stairways shall be composed of steel, and risers must be of approved incombustible material, except that:
text: All stairways, ladders, elevators, stringers, treads, platforms, and landings subject to potential fire exposure and not within a protective enclosure must be composed of steel unless their failure will not hinder fire fighter access or debarkation.