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With the new 2020 Building Code now in effect, the Minnesota Department of Labor and Industry has published a list of substantive changes.
Administration and Definitions
Sections R 310.1 and R310.6 provisions for emergency escape and rescue openings for new and existing basements
Sections R314 and R315 Smoke Alarms and Carbon Monoxide Detectors
Table R402.2 Minimum specified compressive strength of concrete
Section 404 Foundation and Retaining Walls
The 2020 Minnesota Residential Code also includes these significant changes from the 2018 IRC: