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<br /> ^ � MEMORANDUM
<br /> . Page 4
<br /> NBBJ . A,�h;,<<,��� Desiqn Plonninq
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<br /> ❑15aulhlockson5heelSeanle,Woshinqlon9B101 1706)7t3�5555Fo�f70616Y1�1300 .�j- 1 �� �`�, \'��,; , / \'
<br /> �� �k ��`^ , �.11 .ir �
<br /> �,�11' " �'����li ,-' r�1 (1 I_��A
<br /> �.� �(\, 'E,r�,-�� �_ 1�' ,t ;�,.,� �
<br /> � s�Rt� of ihe Carrvp�t c[ruaure: � l�F ,��, � ' , C, , %,}l�_! .
<br /> The ligh�iog/apealcer atwalks are odY uscd to attend to tLe lighling/sound equipment prior to the
<br /> performana,Isec3306(e)]. The�°°SWCGon of l6e ntwalks was in[eoded[o be steel pipe,&e retardant
<br /> treated wood floor and smsll e�annels suspended[rom the roof uruaure. The catwallcs will not be part of tbe
<br /> buildimg enclosure and ue not considered primary stnuture.(sec.1702). T6o aavpant load serviog t6e utwalks
<br /> is leas than 10,Isec.3305(a)]. Gridirons,t1y gelleries and pinrails need only be conswUed o[ooncombustibk
<br /> msterial,[soc3903(�)�. The catwallcs are similar ro the gridiron and the fly gallery,in that t6ey are used only to
<br /> atteod equipment whetLer it be for lights,apeakers,accnery or props. Very few occupants ace involved aud ve*Y
<br /> nre�y,if ever,duriog a pedormma. The coavol room,whic6 will be oxupied during a pedormanx will be
<br /> praected coastruaion.
<br /> Neit6er we nor our theater wnsul[mts know of any similar cahvelks over an auditorium haviog been
<br /> fveproofed. Not being part of tho structural Game of the building u a whole,thex will not afEect the integriry
<br /> of the building if t6ey do fail. Occupsnts at this level and at the seadng level below should be well out of the
<br /> building beFore the 6eat is suEfiaent to cause the'v failure(as w�ih any non•primeq'frame members). City oE
<br /> Seattle did not require for Sagley Wright 7'haeter nor Omak for the'v communiry thaster.
<br /> E9t10�
<br /> NBBJ kft with]etf McFall cop�os of the E�nting path widlhs that cvo have interpreted to be appropriate,usiog
<br /> the'91 UBC. Followiog is a written description and reasonieg be6ind t6ose d�awi°Bs. Als°�°cluded aze other
<br /> eautiog iuues discusud and other issues that require aoceptance that were not diuussed al this meeting.
<br /> ;�'!,' ���
<br /> Aisla:[3315(c)] t loed�em,using half the
<br /> \. The hvo antu sisles with seats on bot6 sides were siud by the oavpan
<br /> c � � �ad o[ucy aection adjaant ro them. T6e width was calcnlated to bo 51'. The side aisles were siud
<br /> - to 36" 'de,using tLe minimum required widt6 for aisles with uats on one si�e. The occupant load using the
<br /> dde ea required s amaller than allowable widlh,(26"),so was not used.
<br /> �- t;t1" . �, .�i FAi <'` Y)Cl`U.�I i��'h) (�;'�".J,l r�,^,.,r';�
<br /> Eiit Pus�Wa°I�ro)�
<br /> T6e eadt peas�gaaays or non-aiales beyond t6e seatiog areas within t6e 6ouse wem siud by tLe occupant losd
<br /> using t6em,1/3 the house using ea�h of the side wuts and 1/2 the house for t6ose using l6e main e�ots.
<br /> CalculetiiW�g for the pass�gewaYs to t6e side e�uts,the width was smal�er than the largest sisle. Tha Sl'widt6
<br /> B
<br /> n . ..
<br /> wo�y chon be used aaoss the froot of the Louse and the 6alls leading to the side eadts. ��`� �-
<br /> Fslt Doore:[3303(b)&3304(�1 t Ioad of t6e
<br /> T6�eri�doors leadiog from the back of the house were sized for the main e�dt,l/2 of the occu G �x�
<br /> house�(257),drv�ded bY 2(328)because of two sets of doora. This would require a 25.6"opening c14�
<br /> � ?5.6). A pair of 3'-0"doors,esch,is beinB provided°za°diog We 25.6"door width and�he Sl'eisle width.
<br /> 9/90
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