What is re-entrant metal deck

Re-entrant metal deck is made up of cold-formed trapezoid-shaped sheets of galvanized high-strength steel，which is used to create roofs and floors for both commercial and residential buildings.

What is re-entrant metal deck

The re-entrant metal deck is shaped like a dovetail, presents a virtually flat soffit with three or four wide trough, which is the distance between each wide trough is not more than 200 mm. Solideck’s SD53-600 and SD51-760 are both Re-entrant metal decks. Re-entrant metal deck is a high performance, profiled, galvanised metal deck for use in the construction of composite floor slabs. The profile may also be used as a permanent shuttering.

Its profile provides an excellent mechanical key into the concrete slab, offering a strong shear bond performance augmented by stiffeners located in the profile trough. and is commonly used on inner city high multi-storey projects where the structural zone is limited, due to the relative­ly thin slab depth required to achieve a typical 1 hour fire rating.

Benefits of re-entrant metal deck

Re-entrant metal deck offers numerous advantages for construction projects. Due to the almost flat soffit of the Re-entrant metal deck, only relatively thin plates are required to meet the fire protection design requirements. According to the test requirements of BS476-part 20, a 110mm thick floor can achieve a fire resistance of 90 minutes. Due to the shape of the dovetail groove of the Re-entrant metal deck, it can provide strong shear bonding performance and can be used as a composite floor. Re-entrant metal deck can also provide Under floor services, with the ribs presenting a dovetailed recessed groove in the concrete slab at 150mm to 200mm centers. This provides the perfect connection for service hangars via a wedge nut or similar device, which is suitable for high-rise buildings And buildings that need to install electromechanical equipment are really great benefits.

Application of re-entrant metal deck

Based on its fire-resistant advantages, Re-entrant metal deck is generally used in large buildings such as high-rise buildings and some shopping malls. Its traditional dovetail shape can provide Under floor services and show its nearly flat aesthetic effect. Solideck’s SD53-600 and SD51-760 are both Re-entrant metal decks. The completed projects include BRAC University and the Macau Airport South Extension Project.

Re-entrant metal deck is a traditional and widely used metal deck. Due to its good fire resistance and Under floor services, it is more and more popular among developers.