Originally Posted by
Thom Walker
Basement egressess are different. I don't have this on disk and am too lazy to type it all. All in section 310.1 through 310.2.1. There are several changes in the 2006 IRC.
Copy and Paste!
- R310.1 Emergency escape and rescue required.
- - Basements and every sleeping room shall have at least one operable emergency and rescue opening. Such opening shall open directly into a public street, public alley, yard or court. Where basements contain one or more sleeping rooms, emergency egress and rescue openings shall be required in each sleeping room, but shall not be required in adjoining areas of the basement. Where emergency escape and rescue openings are provided they shall have a sill height of not more than 44 inches (1118 mm) above the floor. Where a door opening having a threshold below the adjacent ground elevation serves as an emergency escape and rescue opening and is provided with a bulkhead enclosure, the bulkhead enclosure shall comply with Section R310.3. 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. Emergency escape and rescue openings with a finished sill height below the adjacent ground elevation shall be provided with a window well in accordance with Section R310.2. Emergency escape a yard or court that opens to a public way.
- - - Exception:
- - - - Basements used only to house mechanical equipment and not exceeding total floor area of 200 square feet (18.58 m2).
- - R310.1.1 Minimum opening area.
- - - All emergency escape and rescue openings shall have a minimum net clear opening of 5.7 square feet (0.530 m2).
- - - Exception:
- - - - Grade floor openings shall have a minimum net clear opening of 5 square feet (0.465 m2).
- - R310.1.2 Minimum opening height.
- - - The minimum net clear opening height shall be 24 inches (610 mm).
- - R310.1.3 Minimum opening width.
- - - The minimum net clear opening width shall be 20 inches (508 mm).
- - R310.1.4 Operational constraints.
- - - Emergency escape and rescue openings shall be operational from the inside of the room without the use of keys, tools or special knowledge.
- R310.2 Window wells.
- - The minimum horizontal area of the window well shall be 9 square feet (0.9 m2), with a minimum horizontal projection and width of 36 inches (914 mm). The area of the window well shall allow the emergency escape and rescue opening to be fully opened.
- - - Exception:
- - - - The ladder or steps required by SectionR310.2.1 shall be permitted to encroach a maximum of 6 inches (152 mm) into the required dimensions of the window well.
- - R310.2.1 Ladder and steps.
- - - 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. Ladders or steps required by this section shall not be required to comply with Sections R311.5 and R311.6. Ladders or rungs shall have an inside width of at least 12 inches (305 mm), shall project at least 3 inches (76 mm) from the wall and shall be spaced not more than 18 inches (457 mm) on center vertically for the full height of the window well.
- R310.3 Bulkhead enclosures.
- - Bulkhead enclosures shall provide direct access to the basement. The bulkhead enclosure with the door panels in the fully open position shall provide the minimum net clear opening required by Section R310.1.1. Bulkhead enclosures shall also comply with Section R311.5.8.2.
The emergency egress windows must meet the same requirements as all emergency egress windows.
The stair inside must meet the same requirements as all stairs and landings.
ONLY the steps/stairs/ladders in the window well area are not required to meet the requirements for stairs and ramps.