What Thickness of Slab?

Discover everything about the thickness of a concrete slab with PaveBeton.fr

Concrete is a building material that is obtained from a mixture of cement water and aggregates (sand, gravel).

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When well poured on a construction site to carry out a work, it guarantees a considerable life of the work.

Pour a concrete is not an easy thing, but when you know how to do it by respecting the dosages, calculations and different techniques , you get a solid concrete and therefore a slab resistant to any weight and shock.

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However, one point that some people sometimes tend to neglect is the thickness of the slab.

Many builders know how to make concrete, but find it difficult to calculate the thickness of a concrete slab based on the structure they want realize.

After a good reading of this article, you will know how to determine the thickness of a concrete slab.

The thickness of a concrete slab according to the work

The thickness of a concrete slab is one of the key elements to be taken into account before concrete is made.

It is no longer to be shown that a thin thickness slab will be low in strength to the point of cracking in contact with heavy loads and vibrations.

Also, too thick concrete slab will return to you expensive and will only add weight to your work.

The concrete slab that needs to be poured for a simple pedestrian crossing will certainly not have the same thickness as a slab to be poured for parking or driving heavy-duty vehicles.

In the same way, the concrete slab of a pool will require a certain thickness to be able to withstand the volume of water it contains.

It is necessary to design a specific slab for each type of work you want to do.

That is why it is recommended to always calculate the thickness of the slab before any realization, be it a garden driveway, a terrace , a driveway for pedestrians and cars, etc.

Otherwise, your book could collapse very early.

Since the depth of a concrete slab is related to the load it supports, you need to plan:

  • 10 centimeters (cm) thick or slightly less if you want to make a pedestrian driveway or a garden driveway;
  • at least 10 cm thick for a passable driveway for cars and 15 cm for a driveway of heavy-duty vehicles;
  • 15 cm thick to make the concrete slab of a garden shed built of materials masonry (provide 10 to 12 cm for the garden shed (if it is made of wood);
  • between 10 and 12 cm thick for the concrete slab of a terrace if it supports only the weight of the coating;
  • between 15 and 22 cm to make a concrete slab on the floor (try to have this done by building professionals who will first make sure that the work can withstand the weight of the slab);
  • 12 to 15 cm for a car park driveway (take into account the weight of vehicles to be parked there);
  • 15 cm thick for sanitary vacuum paving;
  • minimum 25 cm thick for concrete slab of a foundation;
  • 10 to 15 cm thick for concrete paving in the basement;
  • etc.

Now you have an idea of a few thicknesses of concrete slabs that you need to make.

Surely you are wondering how to do your calculations to be able achieve these thicknesses for each structure. Be quiet, it’s nothing complex.

How to calculate the thickness of a concrete slab?

Three important elements must be taken into account when calculating the thickness of a concrete slab.

This is the load that the slab will bear after pouring, the dimensions of the paving and the nature of the soil .

In order for the concrete slab to have a certain strength, the thickness must be well determined according to the load to be borne by the slab.

P To do this, necessarily involve a professional who will be able to use his techniques to find the thickness it takes to withstand loads.

In addition, if the dimensions of the paving are large, it will be necessary to dose the concrete well and use solid materials (put a good reinforcement) in order to give a certain strength. to the slab.

Understand by this that the larger the dimensions of the tile, the greater its thickness will be.

The concrete slab that you are going to pour will lean on a floor. Therefore, the floor must be well prepared to receive the slab.

If you want to pour the tile on loose floor, you need to plan a thickness of 15 cm to prevent the structure from sag.

If the floor prepared to accommodate the material is natural, it is recommended to first make foundation, hence at least 25 cm thick.

But if the soil is already solid, you can do without the foundation.

How thick is a concrete slab for a garage?

A concrete slab for a garage should not be as thin as some slabs (for pedestrian passage, garden aisles, passage of light vehicles, etc.), since it must withstand the weight of a certain number of vehicles.

To do this, it is necessary to provide a thickness between 13 and 15 cm if it is a private garage (at home).

To make a concrete slab for a heavy duty garage, plan between 15 and 20 cm thick .

What is the minimum thickness of a tile?

For a concrete slab to hold well and does not present a risk of cracking or sagging, it must be more than 10 cm thick, regardless of the load it must receive.

As said a little above, the thickness of a concrete slab varies between 13 and 15 cm at least if you want to make, for example, the slab on loose floor.

What concrete for slab?

As much as it is important to properly determine the thickness of a concrete slab in order to make a work, As much it is important to know what type of concrete to choose depending on the use you want to make of it.

There are a multitude of concretes that are known for their strength and aesthetics unlike traditional concrete.

Thus, some people prefer to opt for printed concrete, draining, disabled while others prefer colored, smooth, self-placing, etc.

If you want to get an original slab with a gravel look with beautiful colors, opt for a disabled concrete.

If you want to bring out the aesthetic side with beautiful patterns and effects, choose a printed concrete.

If you want a concrete that combines beauty and ecological appearance instead, choose a draining concrete.

If, on the other hand, you want your slab to be cast with the greatest ease for an original result, turn to a self-placing concrete.

To better choose your concrete according to your needs, ask for advice from your professional mason who will guide you in the choice.

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