Elevated Concrete Slab On Metal Deck Detail

Decking sheets are usually lapped two inches at the ends.

Elevated concrete slab on metal deck detail.

On top of the steel frame we lay out a metal pan deck to support the concrete slab. Reinforced concrete slab systems on steel decks decking can serve as form shoring and finished surface. Saw cutting an elevated slab however doesn t create the same weakened plane that it does in a slab on ground. The panels click together with a male and female seam on each panel.

The panels are also puddle welded to the steel girders from above. The decking not only acts as permanent formwork to the concrete but also provides sufficient shear bond with the concrete so that when the concrete has gained strength the two materials act together compositely. The seams can be field welded or crimped we chose welding. As the metal frame takes shape the metal pan deck is staged.

When the designer specifies these slabs there is sometimes a misconception that it can meet the same requirements as a slab on ground. They don t have any real design guidance concerning deflection or crack control or how the tolerances can be different between the concrete and the steel. Once installed the concrete slab is ready for tile the most durable and cost effective deck surface in my opinion with minimal prep. Laps are figure 1.

For use when metal deck is used as a leave in place form 1 1 panel features and benefits 4 5d 12 4 5df 24 6d 12 6df 24 7 5d 12 7 5df 24 non composite deck 41 2 inch depth 12 inch coverage 12 foot to 21 foot span range no acustadek option allows for longest unshored spans for use when metal deck is used as a leave in place form. Composite slabs consist of profiled steel decking with an in situ reinforced concrete topping. An elevated concrete slab that is flat level of uniform t h i c k n e s s and at the speci fied elevation. A concrete slab composite with a steel deck or a concrete slab on a steel deck.

Floor details for sheets placed perpendicular to wall and parallel to wall and. Lloyd concrete services the contractor should ask the engineer if it s ok to run laser guided screeds on the deck. The reinforcing steel and steel deck either composite or noncomposite. Engineers who design slabs on metal deck aren t thinking about the contractor.

Wide with six 3 in deep corrugations. All three types of slabs may also be exposed to restrained drying shrinkage and thermal contraction that can cause cracks. Millions of square feet of suspended concrete slabs are placed every year in the u s much of it on a structural steel frame and metal deck. Even with these tolera n c e s how.

That s why american co n c r ete institute aci tolera n c e documents spell out perm i s s i b l e va r iations in flatness leve l n e s s slab thickness and elevation.