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December 15, 2014 Bowers Museum, SSA Project #14048 <br />G <br />SALLY SWANSON <br />A P'i.HITLCIS "a <br />Changes in level along an accessible ROT may not exceed 1/4" maximum vertically or 1/2" maximum <br />when beveled at a 1:2 slope (with up to 1/4" in vertical change allowable). Vertical changes greater <br />than '/2" must comply with ramp feature requirements. Certain hazards may also be present due to <br />changes in surface levels (i.e. drop -offs) where adjacent to the ROT. <br />Factors to consider for compliance with changes in levels include the items as follows: <br />• Changes in level within the ROT • Thresholds <br />• Changes in level at area adjacent to ROT • Door mats <br />• Floor material transitions • Gratings <br />Samples of solutions to the above conditions are depicted in the figures as follows: <br />VERTICAL CHANGE IN LEVEL <br />L--.. <br />1r4' MAX <br />o <br />THRESHOLD DESIGN <br />VERTICAL CHANGE IN LEVEL WITH BEVEL <br />1/2' MAX. <br />1 /4' AT 12 SLC <br />1/4' To IJ2` <br />2 <br />'1 <br />December 15, 2014 SSA Project #14048 Page 17 of 28 <br />