Structural Floor One Way Ribbed Slab

The floor system is the major part of a building structure.

Structural floor one way ribbed slab.

Mathematical structural analysis of one way. The ribs are supported on girders that rest on columns. A reinforced concrete slab is built integrally with its supports and consists of equal span of 15 ft. 1 geometry for one way ribbed slab the load on each rib equals 0 5 t m the shear force and the bending moment are t wl.

One way ribbed slab as a model is analyzed by the two methods traditional and the finite element method. Overview of the one way slab. The selection of an appropriate system is vital in achieving an overall economic building. Read more about the floor system of structure.

T beams are known as joists which are formed by setting steel pan at a constant spacing. Ribbed waffle slab system. The ribs are usually tapered and are uniformly spaced at distances that do not exceed 750mm. Depending on the boundary condition and the properties of the slabs methods of finding bending moment is expressed in the bs 8110 part 01 as follows.

The slab was 6 10m simply supported on four sides and subjected to uniform load 1t m 2 and as shown in fig. The dimensions of each bay are 5 6x5 4m. Slabs are structural members forming floors and roofs in buildings. They may be solid of uniform thickness or ribbed with ribs running in one direction or two directions waffles.

This brief will provide guidance to architects and structural engineers during the concept phase of the design for selecting a suitable one way flooring system. Slab design is comparatively easy when compared with the design of other elements. 763 3 comparison between the results of finite element method and traditional method two bays one way ribbed slab is analyzed by both traditional and finite element methods to determine the induced moments of the rib. This form of construction is not very common because of the formwork costs and the low fire rating.

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. The first stage of the design is finding the bending moment of the slab panels. The service live load is 100 psf and 4000 psi concrete is specified for use with steel with a yield stress equal to 60000 psi. One way slab design example.

A one way joist floor slab consists of a series of small reinforced concrete t beams that are connected with girders that in turn carried by the building column. One way spanning slabs. 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 slab action is assumed in a ribbed floor slab with joist beams made of the precast double tee section in the ribbed floor with integral beams and also in hollow block or hollow cored slabs.