Filler Slab Roof Section

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.

Filler slab roof section.

By reducing the quantity and weight of material the roof become less expensive yet retains the strength of the conventional slab. Concrete is good in taking compression and steel is good in tension. 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. Considering the above points it is better to use clay roofing tiles as filler material in simply supported slabs.

Filler material should be light in weight so that overall weight of the slab. 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. 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.

Reinforcement bars are provided in two perpendicular directions in the space between the blocks. Steel deck profiled steel sheeting steel beam or joist cast in situ concrete topping top reinforcement mesh bottom reinforcement and stud shear connectors. The filler slab is a mechanism to replace the concrete in the tension zone. 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 very good in compression while it is weak in tension. Filler slab roof construction once the shuttering is done the reinforcements are laid in grid form. Of the concrete it replaces this is very important to achieve economy.

Filler materials using in a simply supported slab should be of same size and cross section without affecting the spacing of reinforcement. The most popular filler material is the roofing tile. Filler slab technology is a simple and a very innovative technology for a slab construction. Cross section of composite slab composed of.

The filler material thus is not a structural part of the slab. Filler material texture should match with the desired ceiling finish requirements so as not to provide an ugly ceiling pattern. Filler slabs are one cost effective roofing system which is based on the concrete portions and instead placing filler material there. 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.

Filler material should be of good finish as the material will be in visible condition on bottom part of the slab i e. Filler material should be low cost so that it cost is much lesser then the cost. Cad block of composite steel deck floor.