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r+•, 't� ��4Ct",p'�� ' W D � � U � <br /> 1����•_ -� y �I <br /> � _ � ��U� . <br /> Providence Hospital (continued) ��,(f I� p i 1991 <br /> Page 2 of 2 <br /> au��sa; �,,,�ii a ►�au <br /> MCHIiECTS, P.S. <br /> 4A. The issue elevator lobby requireaents or shaft presaurizati6n ae an <br /> alternative is a aub�ect for which I have not found concensus a�wng <br /> staff or other jurisdictlons. As you knov the City of Seattle does <br /> allov pressurized elevator shafte in lieu of a anoke barriex between <br /> the elevator shsft and a cortidor. The City of Portland also <br /> reco6nlzea this option. The City of bellewe Fire Narehal offers a <br /> cocrvincing argueent to disallov [his configuration and contrary to <br /> our recent converaation, tfie Portlant ataff understood the cost <br /> ihaft preeaurization to not be significant. <br /> The first preference in this case is a smoke barrier at each floor <br /> between the elevator and the corridor. <br /> Kisc. 1 A horizontal exit through the perking area is acceptable provided <br /> the configuretion LnclvGes a dedicated, narked pathvay end the <br /> proxi�ity of the exit and the staLrway to grede reuains a proposed <br /> (about 50 feet) . <br /> Misc 2 UbC Section 3321(c) requires a niniwun corridor vidth of 8 feet in <br /> thls type of aree. No allowance is made for pro�ections such as <br /> colu�ns. <br /> If you heve �ny questione, please feel free to call ne at 259-8810. <br /> Sincerely, <br /> Tis Tyler <br /> Building OfEiclal <br /> 1"f:�tb/n-� <br /> i - � <br />