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A I A C U f <br />► CIn1111ants, r.1. <br />411 11CIe1 <br />Aeeeel 1out1 <br />tulle Tole lunlrel One <br />11111111, NA 11104 <br />108.s11.0201 <br />` 201.513.1111 FAN <br />► rrinelAlll <br />18 May 1993 <br />Mr. Warren Burns <br />Assistant Fire Marshal <br />2811 Oakes Avenue <br />Everett, WA <br />98201 <br />PROJECT: COLBY SQUARE <br />Abacus Project No. 2491-001 <br />SEP,10 1993 <br />........... <br />OF EVERETT <br />Bl1 nter <br />Bldg• Permit �0u <br />SUBJECT: BUILDING LIFE SAFETY SYSTEM DESIGN <br />REFERENCE: Building Dept. meeting of 6/7/93 <br />Dear Mr, Burns: <br />The purpose of this letter is to provide information regarding the parameters <br />and codes used for life safety system design for the above mentioned <br />project. Included are system descriptions, sketches and referenced code <br />sections for fire sprinkler/standpipe system design and smoke removal <br />system design/operation. <br />ITEM 1: STAIRWAY PRESSURIZATION <br />11911r1 A. [iooele, F.F. <br />,I1mo A, Aedlrin, r.[. Code Requirement <br />Mark E. eloEar, F.I. <br />Per the 1991 Uniform Building Code section 331 5: <br />The stair shaft shall be provided with a dampered relief opening at the top <br />Alclerd 0. Moeller, P.I. and supplied mechanically with ufficient air to discharge a minimum of <br />2,500 cubic feet per minute thr h the relief opening while maintaining a <br />Michael A. 111r1eaA1, RE. minimum positive pressure f 0.05 inch of -water column h the shaft relative <br />to atmosphere with all doors losed land a minimum of 0.10-inch water\ <br />e00111 [. Celli, F.E. (column difference between the stair shaft and the vestibule. � <br />Murk 1. Aelleal, P.I. Please note that it is our present interpretation that the Uniform Building <br />Code doesnotspecify or require elevator hoistway pressurization. <br />Waaea 1. II1119, P.E. <br />Piker L. VerlAor, III <br />�.... 'S'd S1Wj13nSW0J SnDuse We90:60 E6, 0T d3S <br />