What is slab design?

Introduction. 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.

Is 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:

What is two way slab design?

A two-way slab is a slab that is supported on all its four sides by beams. The supports carry the loads along both directions of the slab. Hence, it is called a two-way slab. If the longer span of the slab is ly and the shorter span is lx, then if it is a two-way slab, ly/lx is less than 2.

What is a one way slab design?

One-way slab is a type of concrete slab in which loads are transferred in one direction to the supporting beams and columns. Therefore, the bending occurs in only one direction. The design of one-way slab is simple and can be carried out easily. Slabs are used to provide flat, useful surfaces.

What is the minimum thickness of RCC slab?

Minimum Thickness of Slab The minimum thickness of the RCC slab is 4″ or 100mm, 3″ for sidewalk, 4″ for patios, 6″ for driveway and minimum 4″ thick for parking.

How do you know if a slab is two-way?

How do we calculate a one way or two-way slab? If L/b ratio is greater than or equal 2 or then it is considered a one-way slab. If L/b ratio is less than 2 then it is considered a two-way slab.

How much does a slab of steel cost?

Thumb rule for Steel required for RCC slab is 80 kgs/m3, then quantity of steel required for 100 sq ft ( 0.944 m3) rcc slab is equal to = 80 × 0.944 = 75.5 Kgs. Ans. :- 75.5 Kgs steel quantity are required for 100 sq ft 4 inch thick rcc roof slab.

What is the minimum slab thickness?

What makes up a flight of stairs in NPTEL?

It consists of a flight of steps (stairs) and one or more intermediate landing slabs between the floor levels. Different types of staircases can be made by arranging stairs and landing slabs.

What are design proposals for reinforced concrete corbels?

This paper presents ‘design pro- posals for reinforced concrete corbels, based upon conclusions drawn from recent experimental studies of the behavior of reinforced concrete corbels’ and of shear trans- fer across a plane which is also sub- ject to moment and direct tension.2 General philosophy

When do you call a slab a two way slab?

1 1. Inroduction When the ratio (L/S)is less than 2.0, slab is called two-way slab, as shown in the fig. below. Bending will take place in the two directions in a dish-like form. Accordingly, main reinforcement is required in the two directions.

What is the working stress method for NPTEL?

An error occurred while retrieving sharing information. Please try again later. Working Stress Method (Contd…) Working Stress Method (Contd…)