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DUOWEI profiled sheet-composite slab, as permanent form in construction stage, bear construction load and concrete weight. In use stage, the profiled sheet will be used as the bottom reinforcing bar and will generate composite effect after concrete reaches the strength.
There are pre-processed slots between the corrugations of the profiled steel plates, available for engineering use like electric power and communications.
The dead load of the entire structure is reduced, saving the basic cost of the lower part.
During construction, the profiled steel plate can enhance the lateral stability of the supporting steel beam.
It gives full play to the mechanical properties of two materials - steel and concrete.
It does not require formwork, getting rid of the removal and installation of formworks.
The profiled steel plate is equal to tensile main rib based on calculation, only moisture reinforcements are needed.
The profiled steel plates provide an even ceiling surface for concrete buildings.
After installation, the profiled steel plate can be used as a safety work platform for workers, tools, materials and equipments.
Eight major characteristics
Strong concrete bond shear resistance
With Special closed-rib design, good longitudinal shear-bearing capacity, there has never been slippage between the steel bearing plate and the concrete upon closed built-up slabs within design load limit.
Excellent fire performance
The ribs of slab are completely encased in concrete, just like the cast-in reinforcement. Closed built-up slabs can completely replace the positive moment tensile reinforcement in the floor slabs, and an 1.5-hour refractory power can be achieved without need to brush fire-resistant coating
Superior section of built-up slabs
Closed built-up slabs have a higher effective height of the floor slab and a bigger combination stage to provide a more powerful positive moment resistance.
Board（Slab） end slot-type suspension system
For the use of ceilings, ceiling, plumbing installation, etc., no need of drilling or welding; during the building period, it can be moved, removed or reinstalled, according to the need.
Simple, rapid construction
It does not require any plug, with no leakage of mortar, available to shorten the construction cycle.
Even slab bottom appearance
The slab bottom is even, it is beautiful for the buildings not planned for the ceilings .
Effectively reduce the slab height
According to fire regulations and shatterproof requirements, the total thickness of the closed built-up slab is only 110-130 mm, 30-40 mm less than the opening profiled steel plate composite slab, thus getting a reduced self weight, reduced costs, and increased height.
The reinforcements bearing the positive moment of the closed built-up slabs are replaced by the profiled steel plates, without need to brush fire-resistant coating, thus reducing the usage of reinforcements and cutting down the costs.
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