Filler slab is based on the concrete portions and instead of placing filler material there and is one cost effective roofing system.
Filler slab roof disadvantages.
Here is a detailed article with all the information regarding procedure of rcc slab roof laying.
Pitched roof need much more area of roofing material than flat roof.
The mechanism the filler slab is a mechanism to replace the concrete in the tension zone.
The filler material thus is not a structural part of the slab.
This image shows a beam.
Rcc slab laying is one of major step in any type of construction so it is mandatory to know all the points related to laying rcc slab.
At this point you will need to choose whether you would prefer a pitched roof a roof with at least two slopes that rise at an angle greater than 10 degrees each to make a peak or a flat roof a roof with an angle of less than 10 degrees.
A flat roof cannot be used for long spans without using columns and beams.
By reducing the quantity and weight of material the roof become less expensive yet retains the strength of the conventional.
Rcc is composite material where concrete is strong in compression and weak in tension.
Disadvantages of flat roofs.
Hence we are elimi.
Where the area above the neutral axis is the compression zone and the area below the neutral axis is tensile zone.
Filler slab as projection creating an interesting articulation.