IPC 2013 : E04D 3/368 : by forcing together the marginal portions of adjacent slabs or sheets.

IPC2013 > E > E04 > E04D > E04D 3/00 > E04D 3/368[2] > by forcing together the marginal portions of adjacent slabs or sheets.
Notes[t] E01 - E06: BUILDING
Notes[n] E04D 3/361 - E04D 3/368:
  • In groups E04D 3/361 - E04D 3/368, additional small fastening elements, e.g. nails, screws, are not to be considered to be separate connecting elements.
E SECTION E — FIXED CONSTRUCTIONS.
E04 BUILDING.
E04D ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F 13/00).
E04D 3/00 Roof covering by making use of flat or curved slabs or stiff sheets (E04D 1/00 takes precedence; built-up roofs E04D 11/02).
E04D 3/368 · · by forcing together the marginal portions of adjacent slabs or sheets.