Ohio Frost Line Depth - Frost line depth termite decay 30 psf 90 mph b severe 40 inches moderate to heavy slight to moderate 5°f yes feb. 03, 2025 1110 50. 1°f. Where lot lines, walls, slopes or other physical barriers prohibit 6 inches (152 mm) of fall within 10 feet (3048 mm), drains or swales shall be constructed to ensure drainage away. Exterior footings shall be placed not less than 12 inches (305 mm) below the undisturbed ground surface. Where applicable, the depth of footings shall also conform to sections 403. 1. 4. 1. The frost line depth may require deeper footings than indicated in figure 403. 1(1), the jurisdiction shall fill in the frost line depth column with the minimum depth of footing below finish grade. A minimum depth of 32 inches from finish grade to the bottom of the footing is required by the residential code of ohio. Minimum size shall be determined by load bearing value of the soil. Where the frost line depth requires deeper footings than indicated in figure 403. 1(1), the frost line depth strength required for weathering shall govern. The jurisdiction shall fill in the frost line. The minimum frost depth for ohio is not defined statewide and varies by jurisdiction. Frost depths for the three most populous cities in ohio are given below. Rds indicate an average in ohio ranging from 10 inches to 25 inches. Extreme frost penetration depths in ohio range from 20 inches to 40 inches. The depth of frost penetration. For buildings where the monthly mean temperature of the building is maintained at a minimum of 64°f (18°c), footings are not required to extend below the frost line when protected from frost. Frost lines vary by latitude and are deeper closer to the poles. According to the federal highway administration, the maximum frost depth ranges between zero to eight feet in the contiguous. It’s also referred to as the frost depth. When water changes from liquid to solid, it expands 9% in volume.
Frost line depth termite decay 30 psf 90 mph b severe 40 inches moderate to heavy slight to moderate 5°f yes feb. 03, 2025 1110 50. 1°f. Where lot lines, walls, slopes or other physical barriers prohibit 6 inches (152 mm) of fall within 10 feet (3048 mm), drains or swales shall be constructed to ensure drainage away. Exterior footings shall be placed not less than 12 inches (305 mm) below the undisturbed ground surface. Where applicable, the depth of footings shall also conform to sections 403. 1. 4. 1.