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Slab-on-grade construction is a somewhat uncommon method of home building that replaces the conventional foundation wall and basement or crawl space with a concrete slab that rests directly on grade.
Slab-on-grade foundation. As the name suggests, a slab is a single layer of concrete, several inches thick. The slab is poured thicker at the edges, to form an integral footing; reinforcing rods strengthen the thickened edge. The slab normally rests on a bed of crushed gravel to improve drainage.
Read about how to build a slab on grade step by step, Building a thickened edge slab-on-grade foundation, Raft slabs for poor soil conditions or infill to avoid excavating and soil remediation. Everything you need to know about high performance home construction can be found in the Ecohome green building guide pages.
So, a slab-on-grade foundation is a concrete foundation placed directly onto the ground. It is a simpler foundation type often used for home and even DIY shed foundations. Slab-on-grade usually has thickened footings in the corners and edges of the slab and below load-bearing walls.
Slab-on-grade foundations are one of the most common foundations in the U.S. because they can be adapted to perform well in a wide range of climate zones and difficult soil conditions.
Concrete slabs on grade are a very common type of concrete construction. Floor slabs can range from a simple residential basement slab to a heavy-duty industrial floor.
Slab on Grade. You're in the right place for step-by-step guides to insulated slab on grade foundations and floors especially if building a high-efficiency LEED, Passive House, ZNE, FPSF or Positive Energy or Passive Solar Homes.
1. Pennsylvania Housing Research Center. The Pennsylvania Housing Research Center (PHRC) provides and facilitates education, training, innovation, research, and dissemination to the residential construction industry for the purpose of improving the quality and affordability of housing.
A slab-on-grade—also called a slab foundation for short or a floating slab foundation —is one that consists of a solid, monolithic slab (single piece) of concrete poured directly onto the soil and on top of which a home or other structure sits.
4.0. GET QUOTE. Limited Time: No current offers available. What is a Slab Foundation? Slab foundations are the most common type of foundation because they’re cheap and simple to build. A slab foundation is just a 6 to 8-inch concrete pad — or slab, if you will — that your house sits on top of.