What Is Ribbed Floor Slab

They provide a very good form of construction where slab vibration is an issue such as laboratories and hospitals.

What is ribbed floor slab.

The extended part is known as ribs. The name waffle comes from the grid pattern created by the reinforcing ribs. Ribbed slabs are slabs cast integrally with a series of closely spaced joist which in turn are supported by a set of beams. 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 slab is the flange of the beam and the extended part is the web. Ribbed slab system which consists of a series of parallel reinforced concrete t beams framing into reinforced concrete girders. 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 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 is a type of reinforced concrete slabs in which some of the volume of concrete in the tension zone is removed and replaced with hollow blocks or left as voids. The cores can function as service ducts and significantly reduce the self weight of the slabs maximizing structural efficiency. This form of construction is not very common because of the formwork costs and the low fire rating.

The ribs are supported on girders that rest on columns. The main advantage of ribbed floors is the reduction in weight achieved by removing part of concrete below the neutral axis. Ribbed and waffle slabs. Which slab is better ribbed slab or solid slab one way or ribbed slabs.

Ribbed slabs are made up of wide band beams running between columns with narrow. Sandwich slab reinforcement details in reality sandwich slabs are ribbed slabs with a slab placed both to their upper and lower surface. The slab is the flange of the beam and the extended part is the web. 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.

The ribs are usually tapered and are uniformly spaced at distances that do not exceed 750mm. Ribbed or waffle slab is a slab system which consists of series of parallel reinforced concrete t beams framing into reinforced concrete girders. 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. Ribbed waffle slab system.

The spacing between the ribs should be in general 20 30 inch. The extended part is known as ribs. The spacing between the ribs should be in general 20 30 inch.