Table of Contents
- 1 Is code 456 slab design?
- 2 What is the code of RCC design?
- 3 Where do you provide torsional reinforcement in a slab?
- 4 What is the Indian standard for the design of steel structures?
- 5 What should be the min thickness of slab as per IS 456?
- 6 How much torsional reinforcement is provided in slab?
- 7 What is the aci318 code for slab design?
- 8 What are the design guidelines for rereinforced concrete slab?
Is code 456 slab design?
For obtaining modification factor, the percentage of steel for slab can be assumed from 0.2 to 0.5\%. The effective depth d of two way slabs can also be assumed using cl. 24.1,IS 456 provided short span is <3.5m and loading class is <3.5KN/m….b) Depth of slab:
| Type of support | Fe-250 | Fe-415 |
|---|---|---|
| Continuous support | L/40 | L/32 |
What is the code of RCC design?
IS 456-2000 Plain and Reinforced Concrete – Code of Practice is an Indian Standard code of practice for general structural use of plain and reinforced concrete.
How is slab design calculated?
One way slab d = (L/22) to (L/28). Two way simply supported slab d = (L/20) to (L/30) Two way restrained slab d = (L/30) to (L/32)
Which is code is used for design of RCC member?
IS 875 (Part 1 to 5) : 1987 – code of practice for design loads (other than earthquake) for buildings and structures (second revision).
Where do you provide torsional reinforcement in a slab?
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 is the Indian standard for the design of steel structures?
| BIS CODE : INDIAN STANDARD for Structural Engineering | |
|---|---|
| IS: 800-1984 | Code for practice for general construction in steel. |
| SP6 (1) | Handbook for structural steel sections. |
| SP:6(5)-1980 | Hand book for Cold formed, Light Gauge steel structures. |
| SP:6(6)-1972 | Handbook for application of plastic theory in design of steel structures. |
IS 875 is used for?
The minimum requirements pertaining to the structural safety of buildings are being covered in this Code by way of laying down minimum design loads which have to be assumed for dead loads, imposed loads, snow loads and other external loads, the structure would be required to bear.
Is 456 minimum reinforcement?
As per IS 456, the minimum reinforcement in either direction of slabs shall not be less than 0.15 percent of total cross-sectional area in case of mild steel and 0.12 percent of total cross section in case of high strength deformed bars.
What should be the min thickness of slab as per IS 456?
1) AS per ACI (AMERICAN CONCRETE INSTITUTE) the minimum thickness of rcc slab should be 5 inches. 2) As per IS 456-2000 the minimum thickness of RCC slab is restricted to 4 times of nominal size of aggregate. minimum thickness should not be less than 4.75 inches not forgetting factor of safety.
How much torsional reinforcement is provided in slab?
Torsional reinforcement of 50 \% of three-quarters of the area required for maximum mid-span moment in the slab shall be provided at a corner contained by edges over only one of which the slab is continuous.
What is torsional reinforcement in slab?
Corner reinforcement are also called as torsional reinforcement. Torsional reinforcement shall be provided at corner of two way slab. The torsional moment are high near the corner therefore, torsional reinforcement is essential to prevent corner slab from lifting and prevents cracks.
What are the design procedures for a slab system?
ACI318 Code provides two design procedures for slab systems: 13.6.1 Direct Design Method (DDM) For slab systems with or without beams loaded only by gravity loads and having a fairly regular layout meeting the following conditions: 13.6.1.1 There must be three or more spans in each directions.
What is the aci318 code for slab design?
ACI318 Code provides two design procedures for slab systems: 13.6.1 Direct Design Method (DDM) For slab systems with or without beams loaded only by gravity loads and having a fairly regular layout meeting the following conditions: 13.6.1.1 There must be three or more spans in each directions.
What are the design guidelines for rereinforced concrete slab?
Reinforced Concrete Slab Design Guidelines a) Effective span of slab: Effective span of slab shall be lesser of the two L = clear span + d (effective depth) L = Center to center distance between the support; b) Depth of slab: The depth of slab depends on bending moment and deflection criterion. the trail depth can be obtained using:
What is the load on a slab?
The load on slab comprises of Dead load, floor finish and live load. The loads are calculated per unit area (load/m 2 ). Dead load = D x 25 kN/m 2 ( Where D is thickness of slab in m) Floor finish (Assumed as)= 1 to 2 kN/m 2 Live load (Assumed as) = 3 to 5 kN/m 2 (depending on the occupancy of the building)