Click here to request the latest version of a handy Footing Calculator to help you calculate the maximum building span you can do with different footing sizes and depths. The standard upon which the calculator is based is periodically revised and updated by ASABE, so please include your contact information with your request so we may let you know when the standards and calculator are being updated.
This is a customizable spreadsheet - you may change numbers that are in Italics to fit your particular situation. Numbers in Bold are automatically calculated and should not be changed by the user.
The spreadsheet determines Maximum Post Spans per ASAE486.1 - Shallow Post Foundations. This is the Post-Frame Standard referenced in Section 2306.1 of the International Building Code.
Questions: John Fullerton, Heartland Perma-Column; (785) 594-5696; info@HeartlandPermaColumn.com .