Abstract: The air-freezing index (AFI) is a measure of the combined magnitude and duration of air temperatures above and below freezing for a winter season. The 100-y return period of the AFI has been found to be an indicator of the ...

Abstract: A climatography of 100-year return-period air-freezing indexes (AFIs) has been developed to accompany recommendations for the design of frost-protected shallow foundations (FPSFs) in the U.S. residential construction ...