Why distribution steel is provided

As the concrete is weak in tension, to take care of these tensile force distribution, reinforcement is given. The same thing will occur in temperature variation too. As the temperature falls, the slab will attempt to contract.

The name itself defines the meaning of the word. Distribution bar n a reinforced concrete slab is placed usually at right angles to the main reinforcement bar, intended to spread a concentrated load on the slab and to prevent cracking and other types of failure.

It is also known as a Secondary bar. Due to this, cracks are formed on the top of the slab; hence crack are neglected. The distribution reinforcement, in most cases, is designed for strength.

But sometimes main porpoises to provided for other reasons like cracking, load distribution, etc. Distribution steel is mainly provided on the top of the main bar, hence placed in longer span direction. The main purpose of providing distribution steel are used to hold the slabs on either way and to resist the cracks and shear stress developed at the top.

By putting Values. We have two types of bars on this footing. Distribution bar mm 2 m and main bar mm 5 m. The length and width of the footing are different. How did u calculate the weight of steel in main and distribution bars? I am not getting that answer. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. There are 16 different types of slabs in construction. In this post, I am finding out the Estimation of Steel reinforcement required for a Slab to work on this I considered a plan as shown below.

Primarily slabs are classified into two types One-way Slab and Two-way slab to know more about the differences refer here. In one-way slab, Main bars are provided in shorter direction Cranked bars and distribution bars are provided in Longer direction Straight bars.

Whereas in Two-way slab Main bars cranked bars are provided in both directions. Usually, the Two-way slab is adopted when the length and width of the slab is more than 4m. Well to make you perfect in Bar Bending Schedule for a slab, I am considering a One-way slab and two way slab as shown in the figure.

Main bars and distribution bars are provided in the One-way slab. In two way slab, distribution bars are provided in both sides of slab. Distribution bars:- These bars are straight bars.

Main bars:- These bars are cranked bars. Main bars are cranked at an angle of 45 Degree with the length of 0. Extra Bars:- The extra bar is provided at the bottom of Cranked bars to maintain the framework of the slab. Steps to calculate the Reinforcement required for Slab Bars along X Axis Bars along Y Axis As per the above figure Floor slab -2 is a One way slab.

In this kind of slab Mains bars cranked bars are provided in shorter direction hence there is no need of calculating the crank bar length in Y-direction from fig.

Evaluate the length of Bar as given in the figure by deducting the covering length. Carbon Eating Bricks Read More. January 31, at am. May 31, at am. Nasir Khan says:. July 3, at pm. July 31, at am. Faruku Usman says:. August 27, at pm. November 21, at am. March 1, at pm. March 19, at am.