1. Plate presentation

1.1 Industrial roofing applications

Ribbed sheet metal roofing is most often used for industrial roofs, usually of large surface area.

There are two main categories, differing only in the nature of the plates:

• pre-painted or unpainted galvanized steel ribbed sheets:

  • DTU 40.35 (NF P34-205-1) (May 1997): Ribbed sheet roofing from coated steel sheets – Part 1: Technical specifications (classification index: P34-205-1),

  • DTU 40.35 (NF P34-205-1/A1) (June 2006): Travaux de bâtiment – Couvertures en plaques nervures issus de tôles d'acier revêtues – Partie 1 : Cahier des clauses techniques - Amendement A1 (indice de classement : P34-205-1/A1),...