What is the frost line depth for providence RI?

Answer 1

40" FOR MOST AREAS. SOME MUNICIPALITIES HAVE DEEPER REQUIREMENTS, CHECK WITH YOUR BUILDING OFFICIAL. From RI State Building Code: Table R301.2(1) Ground Snow Load Wind Seismic Design Criteria 30psf1, 2 See figure R301.2(4) None4 Weathering Frost line depth2,3 Termite Decay Severe 40" Moderate to Heavy Slight to Moderate Winter design Temp Ice Shield Flood Hazards Air Freezing Mean Annual Underlayment Index Temperature Required 9o F Yes Yes 1200 o 50 o F (see Community FIRMS) NOTES: 1. Roof live load and roof snow load are not additive 2. New Shoreham frost depth is 30" and Ground Snow Load is 25 psf. 3. Requirements for frost depth footings for accessory attached and detached structures are as follows: a. Structures and detached accessory buildings of 0-199 sq. feet do not require any frost depth foundations or footings. Two ground screw anchors or other means approved by the building official shall be provided to resist overturning. b. Accessory attached structures such as decks, platforms or landings shall have footings extending to 3'-4" below grade. Exterior stairs and steps off decks, balconies and platforms greater than 30" above grade shall have stringer supports extending to 12" below grade, and shall be supported and secured to prevent lateral displacement or vertical collapse due to grade changes. 4. Seismic design criteria is not required for buildings and structures regulated by this code.