Filler material should be low cost so that it cost is much lesser then the cost.
Filler slab roof section.
The reason why concrete and steel are used together to construct rcc slab is in their individual properties as separate building materials and their individual limitation.
In a simply supported rcc slab the upper part of the slab is subjected to compressive forces while the lower portion is subjected to tensile forces.
Considering the above points it is better to use clay roofing tiles as filler material in simply supported slabs.
Hence the steel reinforcement is placed in the tension zone.
Filler materials using in a simply supported slab should be of same size and cross section without affecting the spacing of reinforcement.
The filler slab is based on the principle that for roofs which are simply supported the upper part of the slab is subjected to compressive forces and the lower part of the slab experience tensile forces.
The concrete in this portion is only for holding together the steel reinforcement and has no structural purpose.
The filler slab is a mechanism to replace the concrete in the tension zone.
Filler material should be of good finish as the material will be in visible condition on bottom part of the slab i e.
The filler material thus is not a structural part of the slab.
Filler slab roof construction once the shuttering is done the reinforcements are laid in grid form.
Filler slab technology is a simple and a very innovative technology for a slab construction.
By reducing the quantity and weight of material the roof become less expensive yet retains the strength of the conventional slab.
Steel deck profiled steel sheeting steel beam or joist cast in situ concrete topping top reinforcement mesh bottom reinforcement and stud shear connectors.
Cad block of composite steel deck floor.
Concrete is very good in compression while it is weak in tension.
Filler material texture should match with the desired ceiling finish requirements so as not to provide an ugly ceiling pattern.
For example grid of 35cm x 50cm is used for magalore tile as filler material and grid of 45cm x 45cm is used for clay pots of 40cm diameter filler.
Filler material should be of a size cross section and thickness which can be accommodated within the spacing of the reinforcement and cross section of the slab.
Reduces and also the dead load onto the foundations is reduced.
Concrete is good in taking compression and steel is good in tension.
Filler slabs are one cost effective roofing system which is based on the concrete portions and instead placing filler material there.
The floor roof slab is cast with cement concrete of grade ml 5 with these blocks as fillers.
The size of grid depends on structural design and size of filler material.
The most popular filler material is the roofing tile.
Of the concrete it replaces this is very important to achieve economy.
Room size filler slabs were tested for their structural and functional performance at cbri.
