Erosion Under Concrete Slab

Properly installed gutters and downspouts will effectively channel rainwater away from building foundations thereby minimizing erosion under concrete slab foundations.

Erosion under concrete slab.

Erosion of soil is a very common problem. To repair you ll need a form. Bury an aluminum flashing or redwood or other suitable material a couple of inches deep and about an inch from the concrete edge allowing it to extend above the bottom edge of the concrete approximately an inch. This frequently leads to the formation of voids beneath concrete slab foundations.

First solve the erosion problem by directing roof runoff away from the foundation. Whether it be ground water movement drainage rodents or sprinklers when soil is carried away settling concrete is sure to follow. Then underpin the footings with concrete compacted fill or special anchors. These cause voids under concrete slabs.

Concrete slabs can develop voids from a variety of reasons ranging from sliding soil beneath the slab displaced because of a lack of proper compression to water erosion slowly washing away the soil over time. Voids can lead to a weakness in the slab causing dips in the surface tilting or cracks and breaks. Improper water drainage can cause the issue. If the pipe is beneath the concrete the structure will no longer have firm dry soil underneath it just mud.

These two processes develop slowly and are worsened by the erosive behavior of poorly drained water. Roofing and gutter experts make it a point to direct water away from your foundation and other concrete structures during utah s wet season the outpouring can easily wash away supportive soil from around your walkway driveway patio and foundation. Filling hollows under a concrete floor is done through a process called slabjacking. If household plumbing develops a leak it can cause soil under the foundation to wash out from under the slab leaving a void where the slab is no longer sitting directly on soil.

Erosion causes depending on its construction a patio is either of limited porosity or not porous at all. Soil wash out another common building practice is to run pipes for plumbing under a slab foundation before it is poured. Slabjacking is used to prevent everything from porch floors to patios and basement floors from shifting. Potential effects of a void under a concrete slab.

Soil settlement and consolidation. Faulty plumbing can also contribute to the creation of voids. Another issue that could cause erosion under concrete is a burst water pipe. How to fix erosion under concrete slabs.

Shrub and tree roots excel in preventing erosion way better than grass roots.