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Nippon Steel
110 EPDs
EPD: Profiled steel decking for composite floor slabs/decking, 1mm sheet thickness, ComFlor 60 1.0mm (Tata Steel)
Composite floor slabs or decks consist of profiled steel decking with an in-situ reinforced concrete topping. The steel decking acts as a permanent formwork for the concrete and provides tensile resistance as a result of the shear bond between the deck and concrete. Once the concrete has gained strength, the two materials act together compositely. The composite slab is connected to the steel beams, with the composite interaction being achieved by the attachment of shear connectors to the top flange of the beam. These connectors generally take the form of headed studs and are welded to the beam, and provide sufficient longitudinal shear connection between the beam and the concrete so that they act together structurally. The ComFlor® family of products comprises seven steel floor profiles, each designed specifically for a particular application area. ComFlor® 60 is a round shouldered, combined trapezoidal and re-entrant, 60mm profile composite product, which is exceptionally resistant to compressive buckling. The steel floor deck is manufactured in Galvatite® hot dip zinc coated steel, with a guaranteed minimum proof strength of 350N/mm2 . Shear studs are placed centrally in the troughs and the profile provides a 600mm cover width. It is designed to minimise the volume of concrete required, and thus reduce the weight of the floor. A section through the composite slab in shown in Figure 1. Composite slabs are commonly used in the commercial, industrial, leisure, health and residential building sectors because of the speed of construction and general structural economy that can be achieved. The ComFlor® steel deck product is specifically designed for rapid installation of flooring and to facilitate lower mass buildings with long clear span composite concrete floors. Large areas of ComFlor® can be easily craned into position and in excess of 400m2 laid by one team per day. With minimal mesh or fibre reinforcement and pumped concrete, the finished floor can quickly follow, and the completed ComFlor® slabs offer a high level of fire resistance, which in most cases, dictates the minimum slab depth.
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