// CODE SNIPPET
1103.4 Snow Drift Loads
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Any structural element of an existing building subjected to additional loads from the effects of snow drift as a result of an addition shall comply with the International Building Code.
- Structural elements whose stress is not increased by more than 5 percent.
- Buildings of Group R occupancy with no more than five dwelling units or sleeping units used solely for residential purposes where the existing building and the addition comply with the conventional lightframe construction methods of the International Building Code or the provisions of the International Residential Code.