Concrete Slab On Metal Deck Detail

We never use a copperhead or laser because of the potential for overloading the decks.

Concrete slab on metal deck detail.

On the function column to the left you can select from the drop down the appropriate category. The formation of light rust on the top side of the deck prior to concrete placement is common and does not adversely impact the deck or composite deck slab assembly. Slab over the supports will pre ve n t the formation of tension cracks due to flexure when slabs are continu ous for two or more spans. Aci 318 99 building code and commentary by american concrete institute june 1999.

This differential shrinkage within the deck slab could be among other reasons one of the reasons for transverse cracking. Engineers who design slabs on metal deck aren t thinking about the contractor. Transverse shrinkage cracking on the bottom of slabs. For slabs on metal deck the goal often dictates the means and methods.

We don t use a rail system says david buzzelli of texas a m concrete in houston. For a metal or steel deck floor system you need to have 2 layers ie one for the metal deck and one for the concrete topping. Floor decking sheets is also known as profiled steel deck metal deck roof decking etc the earliest name of bondek is called corrugated steel deck and all steel floor decking sheets that are pressed and formed by a platen press and are collectively referred to the floor slab is made from galvanized steel sheet by cold roll forming and its cross section is v shaped u. Everything we do is unshored.

As a contractor therefore don t be afraid to talk to the engineer about all this. These are typical shrinkage cracks that may be reduced by. Lloyd concrete services the contractor should ask the engineer if it s ok to run laser guided screeds on the deck. In the composite deck worksheet since the composite deck is interlocked or engaged with the concrete the deck is.

The standard gray primer is applied to the underside of the steel deck as compared to both sides for roof deck leaving the top side bare for concrete adhesion. Click on the insert button to create a new layer and use the up and down buttons to move them into the correct order. We l d e d w i r e fabric is usually re c o m m e n d e d for tempera t u r e and shrinkage re i n f o rc e m e n t. 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.

We pin all our decks for thickness and wet screed them. Designing with steel form deck by steel deck institute sdi 2003 steel deck and floor deck catalog by vulcraft corporation 2001. 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.