How do you do reinforcement detailing?
Table of Contents
- 1 How do you do reinforcement detailing?
- 2 How do you create a slab reinforcement?
- 3 How do you give slab reinforcement?
- 4 How can you tell one way and two way slab?
- 5 How do you calculate one way and two way slab?
- 6 Which direction is one way slab main reinforcement?
- 7 Is it allowed to put rebar on top of slab?
- 8 How to know the direction of rebar in a span?
How do you do reinforcement detailing?
Do’s for detailing Create a bar bending schedule when required. Specify perfect clear cover, nominal cover or effective cover to reinforcement. Determine detailed locations of openings or holes and provide sufficient details for reinforcements around the openings. The grade of steel should be mentioned in the drawing.
How do you check for reinforcement in a slab?
02. Reinforcement:
- The reinforcement steel should be free of any loose scale, rust, mud, or oil.
- Cutting of reinforcement should be done beam wise and for the total number of the beams, required for slab.
- Make sure that cover blocks used for casting of slab and beam have the same grade as of concrete.
How do you create a slab reinforcement?
Reinforcement Detailing of Reinforced Concrete Slabs
- Thickness of the slab is decided based on span to depth ratio specified in IS456-2000.
- The maximum diameter of bar used in slab should not exceed 1/8 of the total thickness of slab.
How do you determine if a slab is one way or two way?
If L/b the ratio is greater than or equal 2 or then it is considered a one-way slab. If L/b the ratio is less than 2 then it is considered a two-way slab. In one-way slab, the load is carried in one direction perpendicular to the supporting beam. In two-way slab, the load is carried in both directions.
How do you give slab reinforcement?
In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. In two way slab main reinforcement is provided along both direction. Slabs could be simply supported, continuous or cantilever.
How do you apply reinforcement to a concrete slab?
Reinforcement should also be placed low enough so saw cutting does not cut the reinforcement. For welded wire reinforcement, the Wire Reinforcement Institute recommends steel placement 2 inches below the surface or within the upper third of the slab thickness, whichever is closer to the surface.
How can you tell one way and two way slab?
How do you build a two way concrete slab?
How to Design a Two-Way Continuous Slab as per Indian Standards?
- Step 1: Check the Type of Slab.
- Step 2: Preliminary dimensioning.
- Step 3: Load calculation.
- Step 4: Moment Calculation.
- Step 5: Check for Depth.
- Step 6: Reinforcement Calculation.
- Step 7: Check for shear stress.
- Step 8: Check for deflection.
How do you calculate one way and two way slab?
How do we calculate a one way or two-way slab? If the L/b ratio is greater than or equal to 2 or then it is considered a one-way slab. If the L/b ratio is less than 2 then it is considered a two-way slab.
How can I make a two way slab?
Which direction is one way slab main reinforcement?
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 the reinforcement in two way slab?
In two way slab main reinforcement is provided along both direction. Slabs could be simply supported, continuous or cantilever. In two way slab the corners may be held down by restraints or may be allowed to lift up. Additional torsion reinforcement is required at corners when it is restrained against uplifting.
Is it allowed to put rebar on top of slab?
It is not allowed if you put on slab upper part rebar as it is or put into the beam under 10D of rebar thickness of lower part rebar. Slab bar arranges over 80mm space from side of beam bar.
Do I need a bottom mat for rebar?
Show bottom mat or rebar required due to stress conditions (point no 3), if any. Typically this should cover your rebar, if you do not have any specific location which is one way action. The slabs having ratio of longer length to its shorter length (Ly/Lx) greater than 2 is called one way slab otherwise as two way slab.
How to know the direction of rebar in a span?
ÝIf all bottom of slab symbol is different per span, rebar arranged to main bar direction for short side. If span will be reverse direction, you should check in advance because main bar will be reverse direction.