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ROY E. CALVIN, <br />June 22, 1973 <br />Mr. Sohn Farrens <br />Building Inspection Department <br />City Hall <br />3002 Zdetmore Avenue <br />Everett, Washington 98201 <br />Re: Ceiling Grid <br />Everett Mall I ' <br />Everett, [4ashington <br />Dear Mr. Friends: <br />AIA ARCHITECT <br />CORR�C'TED COPY <br />T <br />� <br />313 SOUTH MARKET <br />WICHITA, KANSAS G]202 <br />PHONE l3161 265�8584 <br />Pursuant to our discussion concerning the installation of the one-hour <br />ceiling grid at the referenced project, we have been advised by Mr. Pred <br />McGuire, Acme Acoustics, that Pir. McGuire had 'oeen in contact with both <br />Underwriter's Laboratory and the I•Iashington Survey and Rating Bureau as <br />to cahether they require the intersection of the ceiling tees and ceiling <br />molding to be pop-riveted in order to obtain a one-hour fire rated ceiling. <br />L�oth agencies have advised Mr. McGuire that pop-riveted is not required if <br />all materials meet UL requirements. Mr. Gasfield of the Washington <br />Survey and Rating Bureau is to issue a letter to Mr. McGuire that the <br />pop-riveting is not required to obtain a one-hour rated ceiling. Upon <br />receipt of the same, cae coill copy your office. <br />As we have specified a one-hour ceiling to meet the Washington Survey and <br />Rating Bureau insurance requirements, we coill not require the intersection <br />to be pop-riveted if Pfr. Gasfield issues the above mentioned letter. This <br />does not apply to the theater ceiling grid as the one-hour ceiling is required <br />by the Uniform Building Code. <br />Very txuly yours, <br />ROY �. CALVIN AIA ARC T <br />\,�J, <br />Carrol �. Littlejo <br />Architect <br />CEL:dm <br />cc: Mr. Fred McGuire <br />Pfr. Bob Pioore <br />t•tr. Dudley L. Morris <br />�o����d�� <br />,�+12 7 19i3 <br />GI.� OF EVEREY i <br />�f15pt�tlOT1 GCp�. <br />