Future edition may include a risk consistent frost depth map for conventional foundations correlated to the AFI map in the IRC and ASCE 32 based on work by Cornell University and NOAA For example Lincoln NE AFI 1 500 o F days would have a design frost depth of 32 –not very different than current practice of 36 –southern U S and seaboard states will be designed in accordance with ASCE 32 have a safety factor 8 The TAG members consensus following discussion There is not sufficient data at this time to recommend a revision to the f ooting depth for frost protection The minimum footing depths for frost protection should be reviewed and revised when a new edition of ASCE 32 is published We acknowledge the American Society of Civil Engineers ASCE for permission to publish values that are contained in Tables 4 and A1 in SEI ASCE 32 01 Design and Construction of Frost Protected Shallow Foundations 2001 authored and published by the ASCE This guide represents the efforts of numerous contributors over a period of more than ten years NAHB foundations so the bottom of footing is below the frost depth of the locality or by protecting the foundation per the requirements of ASCE 32 This course will cover the basics of the last method The primary advantage in using this type of construction is as is so often the case lower construction cost Strategically placed rigid insulation allows shallow frost protected 01 01 2001 nbsp 0183 32 For the purpose of this Standard a frost protected shallow foundation is a foundation that does not extend below the design frost depth but is protected against effects of frost This Standard applies to buildings on potentially frost susceptible ground with slab on ground or suspended floor foundations This Standard does not apply to buildings on

the wall The footing depth shall be at least 8 inches nominal ACI 332 Section 6 2 1 6 2 1 1 Wall footing width shall not be less than the applicable dimensions specified in Table 6 2 or the supported wall thickness plus 4 in whichever is less 6 2 1 2 Wall footing thickness shall not be less than the greater of 6 in SEI ASCE 32 01 Published by the American Society of Civil Engineers 1801 Alexander Bell Drive Reston Virginia 20191 4400 ABSTRACT This standard addresses the design and construction of frost pro tected shallow foundations in areas subject to seasonal ground freez ing Foundation insulation requirements to protect heated and un heated buildings from frost 29 01 2017 nbsp 0183 32 RE Frost Depth in IBC KootK Structural 29 Jan 17 15 17 Presumably the map is for unheated structures and thus is not fair game for comparison with the 42 quot requirement Code and the ASCE 32 reference standard for frost protection of shallow foundations In addition one state s installation rules were reviewed and provisions related to FFF design and installations were found to be similarly non compliant Thus a need exists to clarify requirements and provide guidance for proper and compliant applications of FFF designs as an alternative to a conventional foundations correlated to the AFI map in the IRC and ASCE 32 based on work by Cornell University and NOAA For example Lincoln NE AFI 1 500 oF days would have a design frost depth of 32 – not very different than current practice of 36 – southern U S and seaboard states will be affected more by this change ASCE 32 is a reference standard in

01 01 2001 nbsp 0183 32 For the purpose of this Standard a frost protected shallow foundation is a foundation that does not extend below the design frost depth but is protected against effects of frost This Standard applies to buildings on potentially frost susceptible ground with slab on ground or suspended floor foundations This Standard does not apply to buildings on SEI ASCE 32 01 Published by the American Society of Civil Engineers 1801 Alexander Bell Drive Reston Virginia 20191 4400 This is a preview of quot SEI ASCE 32 01 quot Click here to purchase the full version from the ANSI store ABSTRACT This standard addresses the design and construction of frost pro tected shallow foundations in areas subject to seasonal ground freez 28 12 2021 nbsp 0183 32 Constructing in accordance with ASCE 32 or 4 Erected on solid rock K Keystone Sawhorse Joined Feb 23 2010 Messages 1 091 Location Lehigh Valley Pennsylvania May 1 2015 2 I do recall this is one of jar s hot spots footing depth from a previous thread TheCommish Sawhorse Joined Sep 27 2011 Messages 1 339 Location Charlton Ma May 1 Additionally water and sewer pipes need buried below the frost depth The frost line map below was drawn based on data from the U S Department of Commerce Keep in mind you local building official will be able to provide the most accurate information based on your particular area Scroll below the map for even more detailed information Source U S Department of Commerce AFI values represent the seasonal magnitude and duration of below freezing air and can be used to estimate the maximum depth of frost penetration which is useful for determining the depth of shallow foundation construction An accurate estimate of maximum soil frost depth is one important factor in construction costs and building foundations AFI data and maps have been