Steel Roof Deck Corrosion

This exposed moderate to severe corrosion of the deck.

Steel roof deck corrosion.

2 01 steel roof deck a. The deck is a structural panel that spans over roof joist or purlins to provide a flat. Corrosion resistant architectural metals industrial corrugated stainless steel. Roof deck shall have a minimum yield strength of 33 000 psi and a maximum sheet length of 42 0.

Steel roof deck is the predominant structural component used in virtually all flat roofs. Steel roof deck shall be 22 gauge galvanized steel profile to match existing. Recent studies by various parties have examined premature corrosion of metal roof decks where fiberboard insulation was directly attached to the top surface of the metal deck and or where ferrous mechanical fasteners were placed through the fiberboard to anchor it to the deck 1 figures 1 and 2. Horizontal as well as vertical loads may be considered.

Steel roof deck shall be as manufactured by u s. The series of design manuals developed since 1939 have proven successful in their approach to steel deck design and corrosion protection. The discovery of corrosion of the metal deck was initially made on the roof of project no. Corrosion of the steel be controlled and not allowed to affect the integrity and strength of the product.

Steel roof decks that were in contact with wet phenolic insulation will have major corrosion problems. James river steel inc. For most 1 1 2 38 mm deep roof decks the loss of one rib either by denting or penetration can be tolerated and no reinforcement will be required. Steel roof deck shall extend over three or more spans.

The steel deck institute s philosophical approach to deck design is that a design professional will review the application of the information presented in the steel deck institute design manual. Corrosion resistant roof fasteners either stainless steel or coated are crucial. Roof deck roof deck is designed to carry live and dead load without acting in conjunction with other materials. 1 in 1985 about three years after construction when several new penetrations were cut in the asphalt built up roof bur.

Is a virginia based manufacturer of corrugated panels in stainless steel flooring aluminum galvanized steel galvalume and fiberglass for industrial and architectural roofing siding and decking. The roof ceiling assembly is vital to the long term success of a project. In projects calling for a flat roof a roofing membrane with rigid insulation over polyiso board and steel deck is the most common assembly.