by simple overlapping of the marginal portions with use of separate connecting elements, e.g. hooks or bolts for corrugated sheets

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 > by simple overlapping of the marginal portions with use of separate connecting elements, e.g. hooks or bolts for corrugated sheets