Encourages the use and reuse of existing buildings. This code covers repair, alteration, addition and change of occupancy for existing buildings and historic buildings, while achieving appropriate levels of safety without requiring full compliance with the new construction requirements contained in the other I-Codes. Key changes include: Section 410 Accessibility has been relocated to a new Section 305. Chapters 4, 5, 6, 13 and 14 have been relocated resulting in a reorganization and new chapter numbering. Requirements for live loads from Chapters 4 and 8 have been combined and placed in Chapter 3 to apply for all compliance methods. Structural components damaged by snow events must be repaired assuming snow loads for new buildings from the IBC. A new exception is added for loading of existing structural elements next to an addition in buildings designed using the IRC. When a work area includes more than half the building in an alteration, wall anchors must be installed at the roof lin
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