The filler slab is a mechanism to replace the concrete in the tension zone.
Filler slab roof section.
View showing reinforcemnt with roof tiles in between.
Construction detail in dwg file format.
Leak proofing filler slabs.
Reinforcement details clay pan positions.
The most popular filler material is the roofing tile.
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You can also use a general epoxy concrete filler and apply mastic on top using a trowel.
If there is gravel on the roof move it aside to reach a flat surface for these kinds of applications.
Typical cross section view of finished ceiling posted by sujith g s at 5 10 2011.
By reducing the quantity and weight of material the roof become less expensive yet retains the strength of the conventional slab.
In case of continuous slab the support section is designed as doubly reinforced rectangular beam.
Steel deck profiled steel sheeting steel beam or joist cast in situ concrete topping top reinforcement mesh and bottom reinforcement.
Filler material should be of good finish as the material will be in visible condition on bottom part of the slab i e.
A filler slab roof using clay pans.
Filler materials using in a simply supported slab should be of same size and cross section without affecting the spacing of reinforcement.
The filler material thus is not a structural part of the slab.
Since filler roof tiles are firmly bonded to and covered by concrete.
The midspan section is designed as a t beam with cast in situ concrete of flange taking compression and reinforcement at the bottom of the slab in the web portion taking tension.
Thus the filler slab as the roof has the following advantages.
Roof patch putty can be applied using a trowel to fill low areas.
It should not react with concrete or steel it should be light weight low cost and preferably locally available size of filler material should be such that it fits in bottom half of the slab and structural grid of reinforcement using material with good thermal insulation properties like clay will provide thermal comfort inside the room the filler material will.
The filler slab may be analyzed as a two way spanning grid slab.
Plan and section of rcc filler slab 13.
Consumes less concrete and steel due to reduced weight of slab by the introduction of a less heavy low cost filler material like two layers of burnt clay tiles.
Has proved the load bearing capacity of filler slab and found it no less in performance from the conventional r c c.
Filler material should be of a size and cross section.
Mastic is a flexible sealant that adheres to almost any material.
No material embodied energy mj conventional roof filler slab roof quantity consumed total embodied energy mj quantity consumed total embodied energy mj 1 concrete cement kg 5 85 8453 49452 6847 40055 coarse aggregate m3 108 19 15 2068 15 51 1675 fine aggregate m3 87 5 10 837 7 76 679 2.
Slab thickness minimum 112 5 mm.
Cad block of composite steel deck floor.
