IPC 2013 : E04F 11/108 : of wood.

IPC2013 > E > E04 > E04F > E04F 11/00 > E04F 11/108[3] > of wood.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E04 BUILDING.
E04F FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B).
E04F 11/00 Stairways, ramps, or like structures (mounting or marking-off stairways E04F 21/26; of temporary construction E04G 27/00 ); Balustrades; Handrails (ladders permanently attached to fixed structures E06C 9/00).
E04F 11/108 · · · of wood.