Inspections & Guidelines

The following information can be found at www.bozeman.net

Inspections for a New Residence or Commercial Project:

Construction or work for which a permit is required shall be subject to inspection by the building official and such construction or work shall remain accessible and exposed for inspection purposes until approved. Approval as a result of an inspection shall not be construed to be an approval of a violation of the provisions of this code or of other ordinances of the jurisdiction. Inspections presuming to give authority to violate or cancel the provisions of this code or of other ordinances of the jurisdiction shall not be valid. It shall be the duty of the permit applicant to cause the work to remain accessible and exposed for inspection purposes. Neither the building official nor the jurisdiction shall be liable for expense entailed in the removal or replacement of any material required to allow inspection.

Foundation Inspections Include:

  • Footings
  • Ufer Ground/Ground Rods
  • Underslab Plumbing (test)
  • Underslab Water (test)
  • Holdowns/Anchors
  • Vapor Barrier
  • Structural Slab
  • Bond Beam

Minimum Foundation Depths for Buildings:

  • Single story wood and metal structure foundations are to extend a minimum of 3 feet below finished grade to the bottom of the footings.
  • Multi-story and masonry structure foundations are to extend a minimum of 4 feet below finished grade to the bottom of the footings.
  • Footings and walls may be designed by the prescriptive design methods found in Chapter 4 of the International Residential Code or Chapter 18 of the International Building Code using the notes acceptable to seismic zone D-1, or the City of Bozeman Prescriptive foundation Standards.
  • Single story footings are to be a minimum of 12 inches in width and 6 inches in depth reinforced with a minimum of 2 #4 reinforcing bars supported on undistributed natural soil or engineered fill. Single story foundation walls are to be a minimum 6 inches (8 inches if constructed of masonry) in thickness reinforced with a minimum of #4 reinforcing bars placed a minimum of 18 inches on center vertically and horizontally. The top bar is placed a maximum of 12″ below the top of the wall. Concrete is to be a minimum if 2500 psi rated. Vertical reinforcing may be “wet set” into footings but shall maintain 3″ clearance to soils. Footing projections shall be at least 2 inches minimum and shall not exceed the thickness of the footing between the edge of the footing and the edge of the foundation wall.
  • Two story footings are to be a minimum of 15 inches in width and 8 inches in depth reinforced with a minimum of 2 -#4 reinforcing bars and supported on undisturbed natural soil or engineered fill. Two story foundations are to be a minimum of 8 inches in thickness reinforced with a minimum #4 reinforcing bars placed 18 inches on center vertically and horizontally. The top horizontal bar is placed a maximum of 12″ below the top of the wall. Concrete is to be a minimum of 2500 psi rated. Vertical reinforcing bars may be “wet set”into footings but shall maintain 3” clearance to soils. Footing projections shall be at least 2 inches minimum and shall not exceed the thickness of the footing between the edge of the footing and the edge of the foundation wall.
  • Basement footings supporting a single story above are to be a minimum of 12 inches in width and 6 inches (8 inches for masonry) in thickness reinforced with minimum 2 – #4 reinforcing bars supported on undisturbed natural soil or engineered fill. Foundation walls are to be a minimum of 6 inches (8 inches for masonry) in thickness reinforced with minimum #4 reinforcing bars placed 18 inches on center vertically and horizontally. The top horizontal bar is placed a maximum of 12″ below the top of the wall. Concrete is to be a minimum of 2500 psi rated. Vertical reinforcing may be “wet set” into footings but shall maintain 3″ clearance to soils. Footing projections shall be at least 2 inches minimum and shall not exceed the thickness of the footing between the edge of the footings and the edge of the foundation wall.
  • Basement footings supporting two stories above are to be a minimum of 15 inches in width and 8 inches in depth reinforced with a minimum of 2 – #4 reinforcing bars supported on undisturbed natural soil or engineered fill. Foundation walls (2500 psi concrete) are to be a minimum of 8 inches in thickness with minimum #4 reinforcing bars placed 18 inches on center vertically and horizontally. The top horizontal bar is placed a maximum of 12″ below the top of the wall. Concrete is to be a minimum of 2500 psi rated. Vertical reinforcing bars may be “wet set” into footings, but shall maintain 3″ clearance to soils. Footing projections shall be at least 2 inches minimum and shall not exceed the thickness of the footing between the edge of the footing and the edge of the foundation wall.

Reinforcing steel in the footings is not to be supported by pieces of reinforcing steel driven into the ground.

A soil analysis and/or foundation recommendation from a Montana registered engineer are required for commercial projects and residential construction projects.