How thick should a slab be for a 2 story house?

Standard 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.

How thick should a floor slab be?

As a rule of thumb, concrete slabs supporting lighter weights such as paths, patios and shed bases will need to be 75-100mm thick, while driveways and garages need to be at least 100mm thick. Slabs intended for commercial use should be at least 175mm thick and reinforced.

What is the minimum slab thickness for a 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 the minimum thickness of concrete slab?

What is the minimum thickness for concrete? A: Concrete is typically applied at a thickness of 2 inches or more, but the thicker it is, the stronger the slab will be. Four inches is most common for a slab. The thinner applications would include drives, walkways, slabs and footers, just to name a few.

Can I pour a 2 inch concrete slab?

If done properly, new concrete can often be poured right over an existing slab. For this to be feasible, the contractor needs to pour at least 2 inches thick, use smaller aggregate, and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete.

How strong is 4 inches of concrete?

A concrete patio slab should be at least 4 inches thick and have a compressive strength of 3,000 PSI.

Can a concrete slab be too thick?

If the slab is too thin, it may break under load and fail before its time. If the slab is too thick, it costs more than it should. Slab thickness is a major factor in the cost of a concrete floor, so there’s often pressure, which can become intense, to make the slab as thin as possible.

How do you find the minimum thickness of a slab?

Standards like ACI 318 have specified the minimum thickness of the slab based on the span of the slab.

1. Simply Supported Slab = Span / 20.
2. One End Continuous Slab = Span / 24.
3. Both End Continuous Slab = Span / 28.
4. Cantiliver = Span / 10.

What is the minimum vapor barrier thickness beneath a slab?

10 mils
The American Concrete Institute’s Guide for Concrete Floor and Slab Construction recommends that the thickness of the vapor retarder be at least 10 mils.

Is 2 inches of concrete enough?

The minimum thickness for pouring concrete over concrete is 1.5 inches. In most cases, I don’t like to pouring the new concrete less than 2 inches thick. Two inches of concrete (or more) that’s bonded, gives you adequate strength for a wear surface, especially if you’re driving over it.

Can I pour a 3 inch concrete slab?

Here, pouring a concrete slab 4 inches in thickness is fine. A 3- to 4-inch slab will work for the floor of a storage or tool shed, workshop, garden shed, or playhouse.

Should I put plastic under concrete?

A concrete vapor barrier is any material that prevents moisture from entering a concrete slab. Vapor barriers are used because while fresh concrete is poured wet, it’s not supposed to stay that way. It needs to dry and then stay dry to avoid flooring problems. This is why a vapor barrier under concrete is essential.

What should the thickness of a second floor concrete slab be?

Minimum thickness of concrete slab second floor of a light manufacturing building guidelines drawings section b a practical design for thin composite second floor slab preparation you concrete floor requirements 2 post.

What is the thickness of RCC slab for the 2nd floor?

Personally, I like the thickness of slab to be 18 – 22 cm, you can make it even 30 cm but by that you will need more reinforcement and more concrete to buy and will apply more loads on the columns which is a bad thing.

What’s the thickness of a 2 by 10 floor?

Total Thickness. When accounting for joist width, subflooring, flooring and standard ceiling drywall, a floor framed with 2-by-10s will be very close to 11 1/4 inches thick. The same floor, if framed with 2-by-12s, will be 13 1/4 inches thick.

How are concrete floor slabs subjected to loading conditions?

Concrete floor slabs on grade are subjected to a varie ty of loads and loading conditions. The design procedure includes determini ng slab thickness based on moving live loads and then checking adequacy of slab thickness for stationary live load. The design procedure separately incl udes determining thickness of slab under wall load.