There are precautions that must be taken in order to avoid structural damage to a house when planning basement foundation construction an area with soil containing clay. There are couple of tips that should be considered before beginning construction on a basement in such clay soil areas.
Before basement foundation construction can be begun it is imperative to know what type of soil will be built on. Information covering most of the united states is available through the U.S. Department of agriculture. Also, the soil can easily be tested to know what is being worked with. The next important step is that it is ensured that the ground is properly compacted. Failure to compact the soil properly can easily lead to future problems.
Montmorillonite, bentonite and other clay soils that expand are known to cause structural damage issues in the home foundations and basements if, during construction, the necessary precautions are not taken. The it is imperative to be mindful of the nature of the soil that will be built on when making preparations for baseman foundation construction. The moisture that clay holds varies as the seasons change which can change the conditions supporting the home.
If play is built on at a time when it is holding a large amount of moisture the basement can begin to sink as the soil begins to dry. On the other hand, building on dry soil can cause the basement to be pushed up as the soil becomes more moist. Either of these scenarios can be the cause of structural cracks. There are several options for dealing with moisture changes as seasons change when it comes to basement foundation construction.
Before construction on a basement and began the building must be placed on stable ground. Particularly concerning clay, it is imperative that the ground be properly compacted so as it does not shift under the weight of the house. When possible, the soil should be treated with the lime mixture to help control swelling and increased ability. The to do this, a layer of the soil must be removed and several trenches added in the area where the basement foundation construction will take place. Once the trenches are placed, they should be filled with the lime mixture. This sort of treatment, however, adds around a month to the construction time period.
When built and clay soil, basements must be able to move up and down slightly to compensate for the moisture in the soil. So as not because structural damage, the concrete foundation and concrete floors should not be attached. Also, all of the basement’s internal walls must be raised walls. This means that rather than from the floor, the walls are suspended from the first floor thus leaving a gap between them and the floor slab. Some buildings zones even require use of such raised walls. That is the factor that should be inquired on when obtaining a building permit.
In cases where basement foundation construction requires installation of plumbing the floating wall process must be completed in reverse. The floating walls are attached to the floor leaving the space at the top of the wall. To compensate for the natural movement, flex lines and expansion joints must be used. Space must also be left to allow the pipes to move to reduce breakage rest.