Ladders or steps required by this section shall not be required to comply with Sections R311.7 and R311.8. Window wells with a vertical depth greater than 44 inches (1118 mm) shall be equipped with a permanently affixed ladder or steps usable with the window in the fully open position. The area of the window well shall allow the emergency escape and rescue opening to be fully opened.Įxception: The ladder or steps required by Section R310.2.3.1 shall be permitted to encroach not more than 6 inches (152 mm) into the required dimensions of the window well. The horizontal area of the window well shall be not less than 9 square feet (0.9 m 2), with a horizontal projection and width of not less than 36 inches (914 mm). Where a window is provided as the emergency escape and rescue opening, it shall have a sill height of not more than 44 inches (1118 mm) above the floor where the sill height is below grade, it shall be provided with a window well in accordance with Section R310.2.3. The net clear height opening shall be not less than 24 inches (610 mm) and the net clear width shall be not less than 20 inches (508 mm).Įxception: Grade floor or below grade openings shall have a net clear opening of not less than 5 square feet (0.465 m 2). The net clear opening dimensions required by this section shall be obtained by the normal operation of the emergency escape and rescue opening from the inside. R310.2 Emergency escape and rescue openings.Įmergency escape and rescue openings shall have minimum dimensions as specified in this section.Įmergency and escape rescue openings shall have a net clear opening of not less than 5.7 square feet (0.530 m 2).
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Window opening control devices complying with ASTM F 2090 shall be permitted for use on windows serving as a required emergency escape and rescue opening. R310.1.1 Operational constraints and opening control devices.Įmergency escape and rescue openings shall be operational from the inside of the room without the use of keys, tools or special knowledge.
Emergency escape and rescue openings shall open directly into a public way, or to a yard or court that opens to a public way.Įxception: Storm shelters and basements used only to house mechanical equipment not exceeding a total floor area of 200 square feet (18.58 m 2). Where basements contain one or more sleeping rooms, an emergency escape and rescue opening shall be required in each sleeping room. If you find a mistake or have any questions, please Contact Us or call 1-88Ģ015 International Residential Code SECTION R310 - EMERGENCY ESCAPE AND RESCUE OPENINGS R310.1 Emergency escape and rescue opening required.īasements, habitable attics and every sleeping room shall have not less than one operable emergency escape and rescue opening. We try to keep this database up-to-date as best as possible, but express no warranties on accuracy of information. Notice: Please verify with your local county building inspector to double check your code requirements before starting a project. Last updated: Wednesday, October 19, 2016
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