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# � F,�4 <br /> �'Q" g7��-p ;. , , <br /> � i <br /> r�BOEINO car�ur �i <br /> COORDINATION SHEET � � �'� <br /> From: Leonard Aatemborskl No.: 233 II <br /> M/8 OF-78 Job No.: <br /> . 2883583 Date: Oct 8,1891 <br /> FAX 342-8187 <br /> To: Tim Tylor <br /> CNy ol Evered <br /> Public Works <br /> CC: <br /> SubJect: •OHice Tower kflchen exhaust ducta <br /> The exhaust dur.t servinp grease hood FS-3501n the kRchen la routed throuph the <br /> 2nd Iloor ceilinp end Ihen through the bulldinp et column 0•7. <br /> It is our understendinp thet It is eccepteble to use en eltemalive eystem to the <br /> Unllortn Mechenice�Code Chapter 2002 Pert(d)which prescribee thet the entire <br /> lenelh ot dud must be enclosed In a two hour endosure and thet the aheR wene <br /> be aepereled trom the duct lece by e minimum ot 3 Inchea. <br /> The propased altemetive aystem Is to use ceremic fiber flreprooMp on lhe <br /> kHchen duct hi a'zero clenrence'contlpuraGo�. The horizontal duct run wlll be <br /> enclosed with ceramic 8reprooMp to obtein lhe two hour flre raUnp end run H <br /> throuph lhe 2nd floor ceilinp withoul further endosure. The vertir.al run ot ducl will <br /> be enclosed wilh ceramic tlreprooMp to obteln e two hour retlnp end endosed in <br /> one hour reted sheft. <br /> °�,� <br /> Concurrence <br /> Tim Tyler . <br /> Bulldinp Omcial <br />