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The Impact of Clay and Other Substances on a Building’s Foundation

The Impact of Clay and Other Substances on a Building’s Foundation
Clay, sand, and other substances all react differently to pressure, moisture, and time, making them beneficial or hazardous to a project’s foundation depending on the amounts present.

When working to construct a solid foundation for a project, sitework contractors and excavation and grading professionals must consider a variety of different factors to ensure stability over time. One of the factors that engineers and construction professionals must consider is the type of soil or fill material that is being used. Clay, sand, and other substances all react differently to pressure, moisture, and time, making them beneficial or hazardous to a project’s foundation depending on the amounts present.

Clay and Peat

Clay and peat are expansive soils. This means, as the term would suggest, that they can expand under certain conditions. Both peat and clay expand when wet and contract when dry. While most soils have some concentration of clay or peat within them, building a foundation on a surface that is mostly composed of expansive soils can lead to complications. Because they expand, shift, and shrink with changes in moisture, expansive soils can cause foundations to experience a great deal of pressure and eventually crack. Furthermore, peat has an exceptionally low capacity for bearing weight. 

Sand

Sand is another substance that makes an excellent component of fill material but presents complications when used on its own beneath a project’s foundation. Unlike expansive soils, sand does not absorb water. However, grains of sand have the ability to lose their rough edges over time, allowing the foundation to settle or the sand to be washed away. Sand is also particularly dangerous to build on in areas that are prone to earthquakes. While sand can present challenges, there are a few stabilization methods available that allow for construction on sandy ground.

Loam and Stone

Loam is a soil mixture that is made of clay, silt, and sand, and it is a particularly desirable surface upon which to build a foundation. While the clay component of loam can expand slightly when exposed to moisture, this does not typically present significant issues. Stone can also be an excellent surface for construction. While some varieties of rock have exceptionally high capacities for bearing weight, grading is particularly important when working with stone. If the surface is not perfectly level, anchors may be necessary to hold the foundation (and everything on top of it) in place.

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Serving Maryland's Commercial & Residential Builders & Developers Since 1928 Reliable Contracting Company, Inc. maintains a reputation as a leader in the construction industry. Our clientele includes builders, developers, individuals and government agencies. With projects ranging in cost from $10,000 to over $10 million, Reliable can be seen working on Maryland's roads, highways, airports, office parks, shopping centers, hospitals, churches, and residential neighborhoods earning our reputation by providing clients with consistent quality and dedication to their projects. Reliable Contracting Co., Inc. is a Proud Member of the following organizations: Associated Builders and Contractors, Chesapeake Chapter - www.abc-chesapeake.org Maryland Asphalt Association - www.mdasphalt.org Maryland Transportation Builders and Materials Association - www.mtbma.org National Asphalt Paving Association (NAPA) - www.asphaltpavement.org West Anne Arundel County Chamber of Commerce - www.waaccc.org Leadership Anne Arundel - www.leadershipaa.org National Federation of Independent Business - www.nfib.com U.S. Chamber of Commerce - www.uschamber.com Homebuilders Association of MD - www.homebuilders.org
2410 Evergreen Road
Gambrills
MD
21054
USA
Serving Maryland's Commercial & Residential Builders & Developers Since 1928 Introduction Reliable Contracting Company, Inc. maintains a reputation as a leader in the construction industry. Our clientele includes builders, developers, individuals and government agencies. With projects ranging in cost from $10,000 to over $10 million, Reliable can be seen working on Maryland's roads, highways, airports, office parks, shopping centers, hospitals, churches, and residential neighborhoods earning our reputation by providing clients with consistent quality and dedication to their projects.
2410 Evergreen Road, Suite 200
Gambrills
MD
21054
USA