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. Oa/ff/ace 11:43 r.A L.QY..o„r. ... _.. __.._ <br />NORTHWEST <br />Lu� <br />WJune 22, 1999 <br />GA Systems, Inc. <br />7202 NE 175' St <br />Kenmore, WA 9e020 <br />ARanlion: Grog Der <br />Reference: TCI <br />WAC Duct Saddles <br />Everoo, .... <br />Crog <br />The 18 gage WAC support saddlos as -bum (see attached sketch) can safely support a <br />maximum Ilrnit of 51.2 pounds 02ch. Space "ridias for horizontal and vertical dud work <br />as required to stay below this limit for each size of dud being supported. h this limitation <br />can not ba complied with, then additional stiffening elemeMs will be required at the <br />saddle. <br />M I can be of any further assistance, please don't hesltate to call. <br />ENGINEERS NORTHWEST, INC. <br />1 �' 7) <br />{ Allen Tucker, P.E. <br />!t! AaaouetB <br />P"NFFRs NORTHWEST, INC. O.S. • STRUCrURu. ENOiN"RS <br />Ma4W AWNAVf WAMf %f Arrl E.W4M1'8 12MUS-1EE0 rAtPM)M� <br />E'd 9890-280-52* 'oul swa2sas HO esotoo ss E2 unC <br />