CPC Subgroup
E04D 3/36 Connecting; Fastening
Full Title
Roof covering by making use of flat or curved slabs or stiff sheets (E04D1/00 takes precedence; built-up roofs E04D11/02) > Connecting; Fastening
9 direct subcodes
Child Classifications
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- E04D 3/361 by specially-profiled marginal portions of the slabs or sheets
- E04D 3/365 by simple overlapping of the marginal portions with use of separate connecting elements, e.g. hooks or bolts for corrugated sheets
- E04D 3/366 by closing the space between the slabs or sheets by gutters, bulges, or bridging elements, e.g. strips
- E04D 3/368 by forcing together the marginal portions of adjacent slabs or sheets
- E04D 3/369 by welding of the marginal portions of adjacent slabs or sheets