Table of Contents
- 1 Why corner reinforcement is provided in two way slab?
- 2 What is corner reinforcement why and where it is used?
- 3 In what corners of slab torsional reinforcement is provided?
- 4 What should be the required area of provided corner reinforcement?
- 5 In which direction main reinforcement is provided in one way slab?
- 6 What is torsion reinforcement in two way slab?
Why corner reinforcement is provided in two way slab?
Torsion reinforcement shall be provided at any corner where the slab is simply supported on both edges meeting at that corner and is prevented from lifting unless the consequences of cracking are negligible.
What is corner reinforcement why and where it is used?
(1) concrete reinforcement used at wall intersections or near corners of square or rectangular openings in walls, slabs, or beams; (2) metal reinforcement for plaster at reentrant corners to provide continuity between two intersecting planes.
Why corner reinforcement is provided in one way slabs?
Corner Reinforcement These stiff elements restrain the slab and cause additional bending moments at the exterior corners. Corner reinforcement must be provided in the top and bottom of the slab to resist these bending moments.
Why is corner steel provided in slab?
Corner restrained in the slab reduces the bending moment and deflection in the middle of the slab just like fixed beam which reduces the mid-span moment and deflection as compared to simply supported beams.
In what corners of slab torsional reinforcement is provided?
Torsion reinforcement shall be provided at any corners in a two-way slab which is simply supported on both edges meeting at the corner.
What should be the required area of provided corner reinforcement?
The amount of reinforcement in each of the four layers shall be 75 per cent of the area required for the maximum mid span moment in the slab. At corner C2 – Contained by edges over one of which is continuous, the torsional reinforcement shall be half of the amount required for corner C1.
When the slabs are subjected to torsional effect and corners are held down the?
But there are other types of two-way slabs which are not simply supported. For example, the two-way slab may be continuous over one or more supports. Fig. 17.1 that we saw earlier is the plan view of such an example.
Why shrinkage reinforcement is provided in slab?
ACI 318 Commentary states that “Shrinkage and temperature reinforcement is required at right angles to the principal reinforcement to minimize cracking and to tie the structure together to ensure it is acting as assumed in the design.”
In which direction main reinforcement is provided in one way slab?
Difference between One Way Slab and Two way slab:
| One Way Slab | Two Way Slab |
|---|---|
| Main Reinforcement is provided in only direction for one way slabs | Main Reinforcement is provided along both the directions in two way slabs. |
What is torsion reinforcement in two way slab?
Torsional reinforcement is provided in the form of a grid or mesh both at the top and bottom of the slab. i.e. lx/5. The total area of torsional steel provided in each of the four layers should not be less than: Astx(+ve) denotes the area of flexural steel required for maximum mid-span moment in the short direction.