If you consider the foundation construction, Slab Footing plays an important role. It is made of concrete with rebar enforcement which is well poured in the excavated trench. The primary reasons for footing are to offer better support to the foundation and thus protect the settling.
The footing is important in the areas where there are issues with the soils. The slab footing construction is the best left for the advantages that usually can assess the condition of the soil and even decide on the proper width and depth for the footing along with the right placement.
The dimension of the footing also is dependent on the type and size of the structure which is planned for the building. The dimension of the slab footing depends on the type and size of the structure which soon shall be built.
The footings placement is important to offer the right foundation support and thus the structure too.
The concrete slab footing can be used for the projects like a deck, retaining and other constructor types. If you have the knowledge about the soil bearing capacity then there are some practical guidelines that would make sure there is a strong slab footing.
What are slab Footings?
Below even the house, there is a foundation and below that there are footings. Often, we usually take the footings for granted and we can do this for soil use around 20 inches of the footing which has the ability to handle the lightweight of the ordinary house.
There are some common designs of the slab footing such as:
1. Spread footing
2. Upside down “T” shape
3. Stepped footing
4. Stair-like design
5. Trench footing
However, if you are planning to make a soft clay soil or if there is a soft zone below your foundation then it can be troublesome.
A slab footing needs to perform quite well in the soul which may not often work fine in the work bearing situations. We usually don’t see the outright failure, however; it is not to see the excess settlement when the bearing capacity of the soil gets low.
If the entire house gets settled down in an even manner, then there is an extra settlement needed which of course is not a big deal. If the settlement is not even then there is a high possibility of damage too.
A-frame house that comes with better drywall interiors and wood siding can handle nearly ½ inch of the different movement of the foundation. However, even the 1/4th inches of the uneven settling can be sufficient to create the cracks in the tile, masonry, and the plaster.
Usually, trouble comes during an unusual situation. By this, it means, if the slab footing is applied off the centre then there are chances for the wall to miss out the bearing as you come across the soft size at the spot or when the fitting is below size and the builder goes through a judgement call.
If you think there is a problem then it is important to stop and ask for the engineer. However, during such situations, if there is less risk then you can accomplish the job.