Quick Answer: What Will Be The Minimum Thickness Of Slab?

How do you calculate effective depth?

The effective depth of the beam is the distance from the tension steel to the edge of the compression fiber.

Meaning if you have a 400 mm deep beam with T20 tension reinforcement and a cover of 40 mm the effective depth is 400 – 40 – 10 = 350..

Which is better one way slab or two way slab?

In one way slab the slabs are supported by the beams on the two opposite sides. In two way slab the slabs are supported on all the four sides . … In one way slab the ratio of Longer span to shorter span is equal or greater than 2. (i.e l/b ≥ 2).

What is the minimum thickness of RCC slab?

Thickness of concrete slab depends on loads and size of the slab. In general, 6 inch (150mm) slab thickness is considered for residential and commercial buildings with reinforcement details as per design.

What is depth of slab?

b) Depth of slab: The depth of slab depends on bending moment and deflection criterion. the trail depth can be obtained using: Effective depth d= Span /((L/d)Basic x modification factor) For obtaining modification factor, the percentage of steel for slab can be assumed from 0.2 to 0.5%.

How do you measure the thickness of a slab?

Ground penetrating radar, commonly known as GPR, is the best non-destructive way to determine the thickness of a concrete slab before drilling, cutting, coring or trenching. This evaluation technique uses radar waves to calculate an accurate estimate of the thicknessof the slab.

What is slab thickness for houses?

A slab foundation is made of concrete that is typically 4″–6″ thick in the center. The concrete slab is often placed on a layer of sand for drainage or to act as a cushion. Houses built on a slab lack crawlspaces, and there is no space under the floor.

How do you measure the depth of a concrete slab?

How to calculate concrete:Determine how thick you want the concrete.Measure the length and width that you’d like to cover.Multiply the length by the width to determine square footage.Convert the thickness from inches to feet.Multiply the thickness in feet by the square footage to determine cubic feet.More items…•

What is the minimum depth of two way slab?

Moreover, the minimum thickness of any two way slab without interior beams should not be less than the following: For slabs without drop panel 125 mm. For slabs with drop panel 100 mm.

What is effective depth of slab?

Summary. Effective Depth (d) – The effective depth (d) of a reinforced concrete floor slab is the distance from the compression face to the centre of the tensile steel when an element is subjected to a bending moment.

What is 2 way reinforced concrete slab?

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 slab, the ratio of longer span (l) to shorter span (b) is less than 2.

How thick does a concrete slab need to be for a patio?

4 inchesMinimum standards for the construction of concrete patios will generally apply to ensure that safety is maintained. The minimum thickness of any concrete slab is 4 inches. However, if the concrete patio will have heavy features added upon it, you may want to thicken it to 6 or 8 inches.

How thick is a commercial concrete slab?

4 to 6 inchesMost specifications for retail or commercial concrete slabs specify 4 to 6 inches of thickness. Owners and contractors have historically disputed whether a poured slab meets a specification because of its thickness.

How thick does a concrete slab need to be for a garage?

four-inchesThe concrete slab should be four-inches thick at least; it needs to be thicker if heavy equipment will rest on it. Building codes offer requirements for the concrete mix, which vary by region.

What should be the thickness of slab?

4 inchesStandard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.