What do you mean by Ribbed Slab?

What do you mean by Ribbed Slab?

Ribbed or waffle slab is a slab system which consists of series of parallel reinforced concrete T beams framing into reinforced concrete girders. The slab is the flange of the beam and the extended part is the web. The extended part is known as ribs. The spacing between the ribs should be in general 20-30 inch.

What is the purpose of rib floor?

Ribbed and waffle slabs provide a lighter and stiffer slab than an equivalent flat slab, reducing the extent of foundations. They provide a very good form of construction where slab vibration is an issue, such as laboratories and hospitals.

What is the difference between ribbed and solid slab?

A Ribbed Slab gives considerable extra strength in one direction while a waffle slab gives added strength in both directions. And this is possible only in monolithically cast concrete which is the two-way grid of beams. In comparison to the solid slab, the span limits of ribbed slabs are considerably longer.

Where is Ribbed Slab used?

Ribbed slabs are suitable for medium to heavy loads, can span reasonable distances, are very stiff and particularly suitable where the soffit is exposed. Slab depths typically vary from 75 to 125 mm and rib widths from 125 to 200 mm. Rib spacing of 600 to 1500 mm can be used.

What is a concrete rib?

Super rib construction joint rib mesh or SP Rib is a galvanized mesh used to form construction joints, wall joints and slab joints. This expanded metal formwork allows concrete to flow through the key joint and can be used for beams, walls, soffits and columns, both horizontally and vertically.

What is rib civil engineering?

RIB iTWO civil is one of the most advanced CAD software solutions for infrastructure, civil engineering, road and sewer construction. They use intelligent, integrated workflows to improve the predictability, productivity and profitability of infrastructure planning projects.

What is a rib in RCC?

The top part of the Slab which acts along the beam to resist the compressive stress is called flange. The part which lies below the slab and resists the shear stress is called rib.

What is a rib in construction?

And all done with low wages laborers. At left a sketch of the steel reinforcement of the stem (rib) where rebars and stirrups are designed by structural calculations, to take the loads and stress depending of the conditions of the location of the building.

What mean by solid slab?

The solid slab is a customised, loosely reinforced, full concrete slab which is used in residential and industrial construction. The solid slab has a smooth formwork underside with a high surface quality and can therefore be wallpapered or painted.

What is band beam?

Beams that are very wide compared to the columns that they frame into are widely used in some regions of low seismicity. Australia is one such place, and these types of beams are often referred to as “band” beams.

What is one way ribbed slab & two way ribbed slab?

In one way slab, the distribution of longer span (l) to shorter span (b) must be equal or greater than 2. In the two way slab, the distribution of longer span (l) to shorter span (b) must be less than 2.

What is grid floor?

GRID Floor is a floor made up of interlocking tiles made of robust recyclable PP (Polypropylene), having dimensions of 400x400mm complete with profiles for corner and edges. GRID Floor is drive-over and easy to install or remove with a simple click.

Is there such a thing as a ribbed floor?

Ribbed floors consisting of equally spaced ribs are usually supported directly by columns.They are either one-way spanning systems known as ribbed slab or a two-way ribbed system known as a waffle slab. This form of construction is not very common because of the formwork costs and the low fire rating.

Which is the best description of a ribbed slab?

Ribbed or waffle slab is a slab system which consists of series of parallel reinforced concrete T beams framing into reinforced concrete girders.

How is a ribbed floor different from a waffle floor?

Ribbed (Waffle) Slab System Ribbed floors consisting of equally spaced ribs are usually supported directly by columns.They are either one-way spanning systems known as ribbed slab or a two-way ribbed system known as a waffle slab. This form of construction is not very common because of the formwork costs and the low fire rating.

What is the depth of a ribbed floor?

The overall depth of the floor typically varies from 300 to 600 mm with overall spans of up to 15 m if reinforced, longer if post-tensioned. The use of ribs to the soffit of the slab reduces the quantity of concrete and reinforcement and also the weight of the floor.