Concrete slab foundations, a popular choice for all types of construction projects, are strong and durable.
Building them right saves costly problems later.
In this article
A.
They are also regularly used for smaller construction projects as well.
Once the foundation outline has been verified as square, footings excavation can then commence.
The footing trench should be about 8 inches in width and depth.
Spread and rake level 4 inches of compacted gravel over the entire foundation site.
Each sheet should provide six strips.
Use a table saw or a straight edge with a circular saw to ensure saw cuts are straight.
As an alternative, pre-fabricated stakes can be obtained at most home improvement stores.
Plan to use one stack for each linear foot plus an extra stake for each corner.
Once the stakes are in place, attach them to the plywood strips with screws.
Add Slab Foundation Metal Reinforcement
Once the forms are in place the next step is adding metal reinforcement.
6 x 6 inch welded wire can be used unless local codes require the installation of rebar.
Once the metal reinforcement is in place, it will be time to pour and finish the concrete.
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Using the right techniques avoid costly repairs later.
J-bolts should be installed within 6 inches of each corner and about every 36 inches around the perimeter.
Then install galvanized J-bolts at the pre-determined and marked locations about 13/4 inches out from the forms.
The bolts should be plumb and threads should extend at least 2-1/2 inches above the slab surface.
Allow the concrete to cure for a full 24 hours and then the forms may be removed.
Wait at least an additional 24 hours before starting to build on the slab.
D. Concrete Slab Foundation Repair Methods
The best concrete slab failure solution is prevention.
Why do slabs fail?
The primary culprit is water, usually not enough, or an unequal distribution.
Heed the Warning Signs of Foundation Failure
Its important to spot any sign of failure early and be proactive.
Like an abscess that causes a toothache, the longer the patient waits, the worse the pain gets!
Homes with a brick veneer for siding may show cracks in the mortar joints.
The problem may not immediately manifest itself inside the home.
Repair is not a DIY project.
Once a problem is identified its critical to select a reputable contractor.
Be careful; many will take a stab at oversell the job.
Always look for an established company offering a transferable warranty.
This is a good way to re-level a sunken foundation.
The process involves pumping a concrete slurry mixture under the low spots in the foundation.
This added volume lifts the structure to the desired height.
The Piling and Piers Method of Foundation Repair
Piers and piles are a better solution for larger re-leveling projects.
During dry times, the thirsty soil will visibly draw away from the concrete.
It needs to be watered evenly.
How much is enough?
Find what works in the area and keep up with it.
As Benjamin Franklin told us, An ounce of prevention is worth a pound of cure.
