Can you pour footings on wet ground?
Be sure to use a stiff concrete mix when you cast the footings. When you form the footings, place enough large stone into the wet, mucky zone to get up above the water table. Compact the stone down into the mud, then pour your footing.
Can you build a house on wet ground?
It is certainly possible to build on your land and create a structurally sound, beautiful home in wet soil. Many homeowners before you have done it! In some areas, this may just require bringing in a few extra truckloads of soil and compacting the ground to give the foundation a firm base.
Can you pour concrete on wet soil?
Cover the wet ground with a tarp before you pour to avoid all the water on the ground. Pouring concrete is a straightforward job. A wet ground is not the best base for newly poured concrete. You can do a few things to help the ground dry up just enough for you to pour your concrete.
Can you build a basement in clay soil?
He says basements can be built in expansive clay soils—if proper precautions are taken. “We’ve seen some foundations that have been damaged by expansive clay,” he admits, “but in every case where we’ve had to repair them, it was a bad design.
How many feet of soil do you need for piers?
You need to go into the non-active layer of soil to the same depth as you have depth of active soil. So, for example, if the active layer goes down to 10 feet, you need to go down to a depth of at least 20 feet with your piers.
Where does the support for a pier come from?
The base area of the pier has a certain amount of capacity it can support but a large amount of its support comes from skin friction. There is also a layer of soil that is ‘active’. That means the moisture content of the soil changes over time and we have very expansive soils in this part of Texas.
Why do piers need to be deep enough?
Secondly, piers need to be installed deep enough and many piers are not. The base area of the pier has a certain amount of capacity it can support but a large amount of its support comes from skin friction. There is also a layer of soil that is ‘active’.
What happens if you put a pier on your foundation?
It really depends on how deep the pier is in the ground; this would determine if it was any help to your foundation or if loosening the soil around your foundation to install that pier actually caused more damage.
How are pier foundations affected by expansive soil?
Drilled pier foundations have been used in California, Colorado and Texas since the late 1950s to reduce expansive soil damage. However, these types of foundations can also be adversely affected by expansive soil behavior if the piers are not sufficiently deep.
What happens to a foundation when it is wet?
If the soil is dry then the soil (clay) will shrink and the foundation will settle; if the soil is wet the soil (clay) will expand and the foundation will heave. But the problem of bad soil in the active region also affects piers and pile foundations, regardless whether they bear below the active soil.
Why are footings and foundations prepared with standing water?
Footings and foundations are prepared on an excavation of “undisturbed” soil. This means the surface of the soil is cohesive or of a consistent strength. Standing water does not absorb quickly or easily into the surface of a cohesive soil. Water can be removed from an excavation without requiring compaction of the soil.
What to do if you put a foundation wall on wet soil?
Drill holes and epoxy steel into the footing to tie the wall to the footing, and then form and cast the wall. This incorrectly placed footing caused the foundation wall to be off-center. If the soil is very strong, this may not lead to problems.
