What is the function of providing distribution steel in slab?

Distribution steel is provided in transverse direction to hold the main steel in position and also take care of shrinkage & temperature stresses.

What is the difference between main reinforcement and distribution reinforcement?

Main reinforcement bar is normally used at the bottom of the slab. Distribution bars are placed on the top of the main bar. 2. Main bar is used in shorter direction but distribution bar is used in longer span.

Why distribution reinforcement is provided in one way slab?

To provide adequate support on the larger side, the main reinforcement bar is provided perpendicular to that side or parallel to the shorter direction. Distribution bars are provided in the longer direction, which won’t help in carrying any load (refer to below image). So it is a one way slab.

What is the function of a 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. A slab is generally several inches thick and supported by beams,columns, walls, or the ground.

What are the functions of distribution reinforcement?

Distribution reinforcement is given to deal with shrinkage stress and temperature effects. After pouring of cement, at the time of curing, concrete will contract since the water in the concrete gets used for hydration.

What is the purpose of bottom Reinf in slab *?

Bottom Reinforcement resists the positive bending moment/sagging at the mid-span of the slab. Top Reinforcement resists the negative bending moment at the supports of the slab. ( 2 ) . It is actually used for the economization of material.

What is main bar in slab?

What are the main bars in a slab? The reinforcement bars that are placed in the tension zone of the slab to resist the bending moment & to transfer the superimposed loads to the supports that are provided for the slab are called main bars.

Why is concrete used for slabs?

Concrete slab floors provide good thermal mass, which works particularly well in cool climates and climates with a high day–night temperature range. Thermal mass needs to be combined with other passive design principles to be effective. Concrete has high embodied energy, but this can be offset by its permanence.

What is the purpose of main reinforcement bar in a slab?

In order to transfer that bending moment developed at the bottom of the slab, Main reinforcement bar is to provide at the shorter span direction. The purpose of the main bar is to transfer the bending load developed at the bottom of the slab to the beams.

What is the difference between Main and distribution bars in slab?

Main reinforcement bar is used to transfer the bending moment to beams. Distribution bars are used to resist the shear stress, and cracks developed at the top of the slab. Why Crank Bars Are provided In Slab?

What is the purpose of the reinforcement(B) in the distribution system?

(b) Provided to resist any shrinkage or temperature cracks that may develop. Although the distribution reinforcements are not designed to take any load but they carry an additional moment in orthogonal direction to the main reinforcements.

Why is the main reinforcement bar provided at the shorter span direction?

High amount of tension will be acting in the support which is near than the other one. Main reinforcement bar is provided at the shorter span direction in order to transfer the bending moment developed at the bottom of the slab. The purpose of providing main bar is to transfer the bending load developed at the bottom of the slab to the beams. 1.