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chapter 5.General Site and Buildinc_ ants ICC A117.1-2009 <br /> 50510 3 Bottom Extension a Stairs.At the bottom <br /> ofastair H|ghlhnra§ shall extend mthe slope of <br /> the stair flight for ahriz, oliadisacequal bone <br /> tread depth beyond the bottom tera nosing. Exten- <br /> §osshall rteurn to a wall, guard, or the landing sur- <br /> Gc, orshlb continuous bthe hndra| da <br /> adjacent kmrmght <br /> x=lets depth <br /> FIG.505.10.3 <br /> BOTTOM No AILEXTENSIONS a STAIR \: <br /> 506 Windows } <br /> 506.1 Gene a. Accessible Unowas all hav opera- /y4e <br /> ble part complying with Setio� n3 9. <br /> dm� <br /> • <br /> 7sr <br /> �\ <br /> �\ <br /> �ƒ <br /> z <br /> ! \ <br /> I \�� <br />