What is a grid slab?
Grid floor slabs consisting of beams which are spaced at regular intervals in perpendicular directions and monolithic with slab. Grid slabs are used for large rooms such as theatre hall, show room shops and large auditoriums. Grid slab offers reduction in cost and gives good resistance to vibration.
What is the difference between flat slab and grid slab?
The strength of the flat plate structure is often limited due to punching shear action around columns, and consequently they are used for light loads and relatively small spans. Grid floor systems consisting of beams spaced at regular intervals in perpendicular directions, monolithic with slab.
Which method is used for the analysis of slab in grid floors?
Various approaches available for the analysis of grid floor frame, are as listed below. 1) Analysis of grid by Rankine – Grashoff method. 2) Analysis by plate theory. 3) Stiffness method.
What is overall depth of slab?
2. Thickness of Slab
| Type of slab | Ratio of span to depth |
|---|---|
| Continuous and spanning in one direction | 35 |
| Simply supported and spanning in two directions | 35 |
| Continuous and spanning in two directions | 40 |
| Cantilever slabs | 12 |
Where is grid slab used?
Waffle slabs are the Structural component which is plain from the top and has a grid-like pattern at the bottom side. Waffle slabs can be used for both constructions of the floor slab as well as ceiling slabs. A flat slab cannot be constructed for a longer span and also get cracked.
What are the different types of grid slab?
Generally, slab on grade is classified into three types:
- Slab on ground. It is the simplest type of slab on grade which is a composite of stiffening beams constructed from concrete around perimeter of the slab, and has a slab thickness of 100mm.
- Stiffened raft slab.
- Waffle raft slab.
Why do we design slab?
A slab is a structural element, made of concrete, that is used to create flat horizontal surfaces such as floors, roof decks and ceilings. If reinforcement is required, slabs can be pre-stressed or the concrete can be poured over rebar positioned within the formwork.
What are the different types of gridgrid slab?
Grid slab or waffle slabs have two major types,I.e, waffle slabs with hidden beams or waffle slabs with solid sections around columns. The first waffle slab type, with beams, behave like solid slab ( slab with beams between columns ) and the analysis method could also be similar to that of solid slab.
Who compiled gridgrid/ waffle slab?
Grid/ Waffle Slab Compiled By, Submitted To, Husen Khorajiya (R16MCE06) Prof. Avinash Deshapande Kurdi Suhaib (R16MCE07) Rahil Aziz (R16MCE09) 2.
What is the difference between PT slab and normal slab?
PT slab is also called as Flat slab because it doesn’t contain beam like regular slab. Insted of beam, they provide drop cap around the Column. Drop cap act as a beam in flat slab. So, the main difference between PT slab and normal slab is presence of beam and PT cable.
What is a waffle slab?
The first waffle slab type, with beams, behave like solid slab ( slab with beams between columns ) and the analysis method could also be similar to that of solid slab. And in most codes coefficients are provided for slabs with beam.