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<br />Emergency Egress/Rescue Opening <br />IRC Section R310.1 <br /> <br />Bars, grates or grilles may be installed on egress <br /> <br />Windows if they are equipped with approved release <br />Fire Safety <br />mechanisms that is openable from the inside without use <br />Many fire deaths happen when people are asleep in their <br />of a key, special knowledge, or a force greater than that, <br />home. The Building & Fire Codes require that all <br />which is required for normal operation of the escape <br />sleeping rooms and basements have at least one <br />& rescue opening. <br />openable door or window to allow occupants to escape, <br /> <br />and rescue personnel wearing full gear to enter the <br />Window Wells <br /> <br />building for rescue and firefighting. <br />Emergency escape windows are not required to have an <br /> <br />escape route down to grade. However, any egress <br />Window Requirements <br /> <br />window below adjacent grade must have a window well. <br />Egress windows must open directly into a public street, <br /> <br />public alley, yard or exit court. The windows may exit to <br />Window wells must allow the window to be fully opened <br />an interior exit court, provided the exit court has a <br />and provide a minimum net clear opening of 9 square <br />passageway that provides exit to the public way. Egress <br />feet and a minimum dimension of 36”. <br />windows MUST: <br /> <br /> <br /> <br />Window wells with a vertical depth of more than 44” <br /> Have a net clear openable area of 5.7 square feet <br />must be equipped with a permanent ladder that is usable <br />(Or 5.0 s.f. for windows within 44” of exterior grade.) <br />with the window in the fully open position. Ladder rungs <br /> <br /> Have a net clear openable height dimension of 24”; <br />shall have an inside width of at least 12”, shall project at <br /> <br /> Have a net clear openable width dimension of 20”; <br />least 3” from the wall, and shall be spaced not more than <br /> <br /> Have a finished sill height no higher than 44” above <br />18” on center for the full height of the window well. <br />the floor; and <br /> <br /> Be operable from the inside without special <br />knowledge, tools or effort. <br /> <br /> <br />Minimum Width/Height <br /> <br /> <br />Requirements (in.) <br /> <br /> <br /> <br />34 – ¼” Clear <br /> <br />(30” if a grade <br />Width 20 20.5 21 21.5 22 <br /> <br />floor opening*) <br />Height 41 40 39.1 38.2 37.3 <br />20” Clear <br />Minimum <br /> <br />Width 22.5 23 23.5 24 24.5 <br /> <br />Height 36.5 35.7 34.9 34.2 33.5 <br /> <br />Fixed Pane <br /> <br /> <br />Width 25 25.5 26 26.5 27 <br />(Optional) <br /> <br /> <br />Height 32.8 32.2 31.6 31 30.4 <br />Openable <br /> <br /> <br />Fixed <br /> <br />41” Clear <br />Area <br /> <br /> <br />(36” if a <br /> <br />Pane Width 27.5 28 28.5 29 29.5 <br /> <br /> <br /> <br />grade floor <br />Height 29.8 29.3 28.8 28.3 28.7 <br />(Optional) <br /> <br /> <br />opening*) <br />Openable Area <br /> <br /> <br />24” Clear <br />Width 30 30.5 31 31.5 32 <br />5.7 sq. ft.* <br />Minimum <br />5.7 sq. ft.* <br />Height 27.4 26.9 26.5 26.1 25.7 <br />Minimum <br />Minimum <br /> <br />Width 32.5 33 33.5 34 34.25 <br /> <br />Height 25.3 24.9 24.5 24.1 24 <br /> <br /> Minimum clear area may be <br />Finished Sill Height <br />reduced to 5.0 square feet if the <br />44” Maximum <br />sill height is not more than 44” <br />above the exterior finish grade <br />(Grade floor opening) <br />The County of Hawai‘i is an Equal Opportunity Provider and Employer <br /> <br /> <br />101 Pauahi Street, Suite 107 74-5044 Ane Keohoklole Hwy <br />ā <br />Hilo, Hawai‘i 96720 Kailua-Kona, Hawai’i 96740 <br /> <br />Tel: (808) 961-8331 Page 27 Tel: (808) 323-4720 <br /> <br />