What Is Ribbed Floor Slab

Ribbed and waffle slabs provide a lighter and stiffer slab than an equivalent flat slab reducing the extent of foundations.

What is ribbed floor slab.

They provide a very good form of construction where slab vibration is an issue such as laboratories and hospitals. Hollow core ribbed slab or hollow core slab hollowcore ribbed slabs derive their name from the voids or cores which run through the units. Ribbed and waffle slabs. The main advantage of ribbed floors is the reduction in weight achieved by removing part of concrete below the neutral axis.

One way joist slab ribbed slab it consists of a floor slab usually 50 to 100mm thick supported by reinforced concrete ribs or joists. Waffle slabs are preferred for spans greater than 40 feet 12 m as they are much stronger than flat slabs flat slabs with drop panels two way slabs one way slabs and. The spacing between the ribs should be in general 20 30 inch. The cores can function as service ducts and significantly reduce the self weight of the slabs maximizing structural efficiency.

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. These types of slabs are used in constructing floors of multi storeyed building. The slab is the flange of the beam and the extended part is the web. This form of construction is not very common because of the formwork costs and the low fire rating.

Sandwich slabs may have the disadvantage of a larger weight compared to the ribbed ones but on the other hand they have the advantage that their spans and supports behave in the same proper way. The extended part is known as ribs. Ribbed or waffle slab is a slab system which consists of series of parallel reinforced concrete t beams framing into reinforced concrete girders. The ribs are supported on girders that rest on columns.

A waffle slab or two way joist slab is a concrete slab made of reinforced concrete with concrete ribs running in two directions on its underside. Which slab is better ribbed slab or solid slab one way or ribbed slabs. The name waffle comes from the grid pattern created by the reinforcing ribs. The ribs are usually tapered and are uniformly spaced at distances that do not exceed 750mm.

The extended part is known as ribs. The slab is the flange of the beam and the extended part is the web. Ribbed waffle slab system. Sandwich slab reinforcement details in reality sandwich slabs are ribbed slabs with a slab placed both to their upper and lower surface.

This reduction in the volume of concrete in the tension zone below the neutral axis is based on the assumption that the tensile strength of concrete is zero hence all the. Ribbed slab system which consists of a series of parallel reinforced concrete t beams framing into reinforced concrete girders. The spacing between the ribs should be in general 20 30 inch.