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Rebar is added to concrete to give strength and durability. Concrete projects such as footings, slabs and block walls require rebar. You must install the correct size and grade of rebar on your concrete job, depending on the circumstances and the local building code.
Read MoreMany state and local codes consider a building's wall-to-window ratio in determining its energy efficiency. Building codes vary between jurisdictions. You may have to calculate a building's wall-to-window ratio to ascertain what additional insulation is required to meet your local building code.
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