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Footings are an important part of foundation construction. They are typically made of concrete with rebar reinforcement that has been poured into an excavated trench. The purpose of footings is to support the foundation and prevent settling.
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.
A guide to common concrete footing problems and their solutions: Pouring concrete footings in wet soil, fixing misplaced footings and more.
Concrete Calculator - Figure out how much concrete you'll need for your footings. You can look up the recommended footing size, based on the size and type of house and the bearing capacity of the soil.
The strength and compactness of soil is important when pouring concrete footings. See a chart of soil bearing capacities for bedrock, sand, clay and more.
Concrete steps and stairs design tips including estimating concrete steps, choosing colors and patterns, safety considerations, and more.
Get a step-by-step overview of how to build concrete retaining walls. See examples of poured concrete walls and learn about the construction process.
Most building codes in cold-climates require foundation footings be placed below the frost line, which can be about 4-feet deep in the northern United States. The goal is to protect foundations from frost heaving.
The construction must be done correctly in terms of the type of foundation being formed, avoiding problems with settlement, and properly preparing the subgrade through final curing stages. Each phase of foundation construction has necessary requirements and components upon which a structure depends.
Comprehensive overview of concrete parking lots including how to design and build a concrete parking lot and why they are preferable to asphalt.