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IRC 2009 Habitable Attics

IRC 2009 Habitable Attics. Agenda. Definitions Why designate space as Habitable Attic? Requirements Examples Further help. Habitable Attic Definition. IRC Definition:

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IRC 2009 Habitable Attics

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  1. IRC 2009 Habitable Attics

  2. Agenda • Definitions • Why designate space as Habitable Attic? • Requirements • Examples • Further help

  3. Habitable Attic Definition • IRC Definition: • ATTIC, HABITABLE. A finished or unfinished area, not considered a story, complying with all of the following requirements: • 1. The occupiable floor area is at least 70 square feet (17m2), in accordance with Section R304, • 2. The occupiable floor area has a ceiling height in accordance with Section R305, and • 3. The occupiable space is enclosed by the roof assembly above, knee walls (if applicable) on the sides and the floor-ceiling assembly below.

  4. Why Designate Space as Habitable Attic? • Enables Designer to gain a 5th Floor while staying in IRC

  5. Habitable Attic Requirements • Minimum floor area (70ft2) • Minimum ceiling height (5’ for > 50% of room) • Minimum floor loading (30psf Live) • Fixed stairway • Smoke alarm • Emergency egress window

  6. Habitable Attic Examples • Bonus Rooms above a Garage • Any attic above a relatively wide house where the rafters create enough headroom & is serviced by a fixed stair

  7. Habitable Attic – Further Reading • Pennsylvania Housing Research Center • Habitable Attics

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