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How does landscaping impact my foundation?
Post-tensioned slab-on-grade foundations may experience distress if the site slope, type of vegetation, surrounding landscape and irrigation systems are not properly selected and maintained
The care of your yard and lawn can have a supportive or detrimental effect on the foundation.
All homes built by Omega Builders have a post-tensioned slab-on-grade foundation designed specifically for your lot based on soil tests, site slope and drainage.
The International Residential code states that "The grade shall fall a minimum of 6 inches within the first 10 feet. Where lot lines, walls, slopes or other physical barriers prohibit 6 inches of fall within 10 feet, drains or swales shall be constructed to ensure drainage away from the structure. Impervious surfaces within 10 feet of the building foundation shall be sloped a minimum of 2 percent away from the building.
Tip: Ensure any changes in the landscaping do not impede the drainage away from the slab.
Landscaping may contribute to possible foundation issues
Important: Whether your new home purchase includes full yard sod or not, it is recommended that initial landscaping be done on all sides and proper drainage maintained away from the foundation.
Partial landscaping on only one side of the slab may result in swelling of the soil on that side due to irrigation and result in foundation issues.
Note: Landscaping should be installed to avoid ponding or standing water next to the foundation.
Positive drainage away from the foundation is critical to the performance of the foundation.
Any changes in the exterior layout of the flower beds, decks, patios, fences, trees, shrubs, etc. should be planned to minimize impacts on the foundation.
Consistent moisture content of the supporting soil is the key to successful foundation performance.
Warning: In silty or sandy soils, excessive watering can cause erosion or loss of bearing capacity. In expansive clay soils, excessive water can cause swelling of the soil and lack of adequate moisture can cause shrinkage of the clay.