How are two way slabs supported?
Two way slab is a slab supported by beams on all the four sides and the loads are carried by the supports along with both directions, it is known as two way slab. In two way slabs, the load will be carried in both the directions. So, the main reinforcement is provided in both directions for two way slabs.
Is tie beam always necessary?
It is usually built at the same level but it is not required. The reason it is built at the same level is to reduce the overall cost as no separate scaffolding or shuttering is required. Further taking the re-bars into a footing they can be anchored adequately.
How do I create a one way continuous slab?
One-Way Continuous Solid Slab Design
- Find Minimum effect depth [d] Minimum Effective depth (dmin) = span/ (basic span /depth) x M.F
- Find Nominal Cover.
- Calculate the height of the slab (h)
- Calculate the loading and Design load.
- Calculate the Moment for each panel of the slab, then design it.
How are one way and two way slabs different?
In one way slab, the load is carried in one direction perpendicular to the supporting beam. In two way slab, the load is carried in both directions. In two-way slab, the crank is provided in four directions. If L/b the ratio is greater than or equal 2 or then it is considered a one-way slab.
What is the maximum span for one way slab?
A reinforced concrete slab is built integrally with its supports and consists of equal span of 15 ft. 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.
What is the difference between tie beam and secondary beam?
Secondary beams are those which are rested on primary beams to support either gratings or concrete slabs. The load is transferred from secondary beam to primary beam. Now coming to tie beam, it’s specially provided primary beam when column height between to floor is more than 4–5 m.
What is the difference between one way slab and two way slab?
Main reinforcement is provided in shorter span and distribution reinforcement is provided in the longer span. Main bars are cranked to resist the formation of stresses. Example: Generally all the Cantilever slabs are one Way slab. Chajjas and verandahs are a practical example of one way slab. 2. Two Way Slab:
What is the difference between a flat slab and beam slab?
The plain ceiling diffuses the light better and is considered less vulnerable in the case of fire than the traditional beam slab construction. The flat slab is easier to construct and requires less formwork. This is one of the types of concrete slabs. The thickness of the Flat slab is minimum 8″ or 0.2m.
What are the different types of grade slabs?
There are two types of Grade slabs: Usually after casting Plinth beams. In high rise buildings after constructing Plinth beam the termite control is done in between the beams and then polythene sheet is laid to avoid termites inside the slab and then steel mesh is provided and concrete is filled.