Exam CFPS Topic 5 Question 129 Discussion

It shall be an outside window or door operable from the inside without the use of tools, keys, or special effort and shall provide a clear opening of not less than 5.7 ft2 (0.53 m2). The width shall be not less than 20 in. (510 mm), and the height shall be not less than 24 in. (610 mm). The bottom of the opening shall be not more than 44 in. (1120 mm) above the floor. Such means of escape shall be acceptable where one of the following criteria is met:
(1) The window shall be within 20 ft (6100 mm) of the finished ground level.
(2) The window shall be directly accessible to fire department rescue apparatus as approved by the authority having jurisdiction.
(3) The window or door shall open onto an exterior balcony.
(4) Windows having a sill height below the adjacent finished ground level shall be provided with a window good meeting all of the following criteria:
(a) The window well shall have horizontal dimensions that allow the window to be fully opened.
(b) The window well shall have an accessible net clear opening of not less than 9 ft2 (0.82 m2) with a length and width of not less than 36 in. (915 mm).
(c) A window well with a vertical depth of more than 44 in. (1120 mm) shall be equipped with an approved permanently affixed ladder or with steps meeting both of the following criteria:
I) The ladder or steps shall not encroach more than 6 in. (150 mm) into the required dimensions of the window well.
iI) The ladder or steps shall not be obstructed by the window.