11/1/2023 0 Comments Metal roof decks![]() This is typically noted on the structural drawings or specifications of the scope of the project. The Engineer of Record will ultimately determine the required fastening type and pattern. Form decks that are non-structural after the overlying concrete slab is cured may be made from steel that is uncoated on both sides.Download the Attachment Guide PDF Types of Metal Deck Attachmentsĭepending upon the type of metal deck that you end up using on your project, whether it’s floor deck, roof deck, form deck, or composite metal decking, the recommended attachment method for your application will vary. ![]() Since bonding action is not necessary for non-composite form decks, they may be painted on one or both sides. It is imperative that phos/painted composite deck do not have paint on top of the deck as the bonding action between concrete and steel will be adversely affected by painting the surface of a composite deck where it meets the slab. This composite deck is painted with primer on the bottom side, and either galvanized steel, bare steel on top. On rare occasion for composite floor deck – a uncoated steel sometimes referred to as Phos-painted maybe specified. Various oils or chemicals used to prolong the life of the coil may impact paints ability to adhere properly. It’s important to note that proper steps are taken to ensure proper adhesion to galv coils if a primer is not applied at the factory. Often times, painting galvanized deck is desired for astechtic purposes. Galvanized metal decking exposed to ordinary atmospheric conditions does not need to be field painted for structural purposes. A final coating is recommended as handling, transportation and jobsite conditions are expected to impact the quality of the finish. Therefore, uncoated steel with paint should only be considered a temporary coating not a finished product. Metal deck primer is applied to provide provisional protection for short periods of exposure. While O’Donnell Metal Deck is capable of assisting design - O'Donnell Metal is is not a structural engineering firm and we do not own liability for customer requests. Therefore it is critical that the (EOR) is optimizing for cost in a steel deck design and specifying the correct gauge without over specifying the steel deck requirements.įinally, if you are unsure of what gauge of metal deck is required or have questions it’s always appropriate to request the EOR to dictate this. Inversely the opposite it true, a thinner or lighter deck gauge will likely reduce the cost of the metal deck. A heavier the deck gauge is essentially more steel and very likely to be more expensive compared to a simlar product with a lesser gauge. Therefore In simple terms, more heavier the deck gauges the more the steel deck will cost. It's also the main driver of cost for metal decking. Service Areas – Serving a National FootprintĪs shown below, the gauge or thickness of the metal deck is the main driver for structural integrity for any deck product.Project Gallery – Over 10,000 Successful Projects Nationally.Services – Estimate & Shop Drawing Services.Joist Girders – Designed for steel joists bearing.DLH Bar Joist – Designed for maximum spans.LH Bar Joists – Designed for long spans.KCS Bar Joist – Designed for non-uniform loads.K Bar Joist – Designed for short spans.
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