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What are the footer requirements for new residential construction?

April 26, 2017Construction footer requirements Residential

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What are the footer requirements for new residential construction?

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Marion County uses a standardized compression of 1500psf for soil bearing. The Indiana Residential Code specifies that footers must be at least 12 inches in width for single story construction and at a depth of 30 inches below grade (frost line). Two story light frame construction with siding requires a footer width of 15 inches and two story light frame construction with brick veneer requires a footer width of 21 inches. The values are taken from Table R403.1 of the International Residential Code. If you have a soil study showing a bearing compression greater than 1500psf, stamped by an engineer registered with the State of Indiana, the footer width will need to comply with the corresponding soil bearing in Table R403.1. Section 675 IAC 14-4.3-26 of the 2005 Indiana Residential Code also allows for alternate footer widths for detached garages, detached carports or accessory structures in Table R309.