What is a flat plate slab?
The flat plate is a two-way reinforced concrete framing system utilizing a slab of uniform thickness, the simplest of structural shapes. The flat slab is a two-way reinforced structural system that includes either drop panels or column capitals at columns to resist heavier loads and thus permit longer spans.
What is a two way flat plate?
The two-way flat plate slab is simply a slab of uniform thickness directly supported on columns, and it is generally suitable for relatively light loads. Two-way flat plates can be used for span up to 8m using reinforced concrete and up to 11m with the post-tensioned system.
What is the thickness of flat slab?
The appropriacy of thickness has to be determined for shear and bending moments. The flat slab should have a minimum thickness of 125 mm.
Where is flat slab used?
APPLICATION OF FLAT SLABS
- Flat slabs or plain ceiling surface provide better diffusion of light.
- It’s economic friendly because it reduces formwork.
- It can use where headroom Larger or storey height shorter & pleasing appearance.
- flat slabs are generally used in.
- a) Parking slot.
- b) Hotels.
- c) Commercial buildings.
Where are flat plates used?
Flat plates are commonly used in buildings where relatively low gravity loads are applied. A major concern for flat plates is punching failure of slab in the vicinity columns due to high stress concentration.
Where flat slab is used?
Uses Of Flat Slab:
- Flat slabs are mostly used in large industrial structures, parking garages, ramps, warehouse, high rise buildings and hotels.
- They are also used where uses of beams are not required.
- Or where the structure requires less formwork.
How do you calculate the thickness of a flat slab?
Standards like ACI 318 have specified the minimum thickness of the slab based on the span of the slab.
- Simply Supported Slab = Span / 20.
- One End Continuous Slab = Span / 24.
- Both End Continuous Slab = Span / 28.
- Cantiliver = Span / 10.
What is the minimum depth of two way slab?
For slabs without drop panel 125 mm. For slabs with drop panel 100 mm.
Where is two way slab used?
In two way slab, the ratio of longer span (l) to shorter span (b) is less than 2. In two way slabs, the load will be carried in both the directions. So, the main reinforcement is provided in both directions for two way slabs. Example: These types of slabs are used in constructing floors of a multi-storeyed building.
What are types of flat slab?
Types of Flat Slab Construction
- Simple flat slab.
- Flat slab with drop panels.
- Flat slab with column heads.
- Flat slab with both drop panels and column heads.
