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• • <br /> Stantec Consulting Services Inc. <br /> (, Stantec 400 Fairview Avenue North,Suite 620,Seattle,WA 98109-5371 <br /> August 16,2021 <br /> Attention: City of Everett Permit Services <br /> SEP 2 3 2021 <br /> 3200 Cedar Street <br /> 2nd Floor CITY OF EVERETT <br /> Everett,WA 98201 Permit Services <br /> Reference: 1525 75th Street SW(M2107-056) <br /> This letter is in response to plan check comments received by email on July 23,2021, from the First <br /> Building Review. <br /> 1. The project appears to include replace of ducts throughout the space. Verify that the ducts do not <br /> penetrate fire-rated assemblies. If rated assemblies are penetrated, details are required. <br /> Fire/smoke dampers should be specified where required. See IBC Sections 714 and 717. <br /> Response:As confirmed by Patrick Perkins,W.R. Hanson, Inc by email on 8/16/2021, "based on <br /> the review of the space and the existing conditions,we don't have any ductwork penetrating any <br /> rated walls". <br /> If there are any fire-rated walls that will be penetrated by ductwork, provide RFI for <br /> clarification/details,fire dampers will be required. <br /> 2. The project appears to include hanging units weighing more than 20 pounds. Support details that <br /> include seismic bracing should he included in the construction drawings. Where supports impose <br /> loads on truss chords between web connection points, supplemental web bracing should be <br /> provided as needed. Structural calculations should be included substantiating the design of the <br /> supports and bracing. See IBC Sections 1604.1 and 1613.1, and ASCE 7-16 Sections 13.1.4 Item <br /> 6(c)(ii) and 13.6. <br /> Response: See revised calculation package for seismic bracing and support of VAV equipment. <br /> Equipment support detail has been provided, see added detail to mechanical drawings to be issued <br /> in upcoming bulletin. <br /> 3. The structural calculations include an evaluation of the roof framing supporting the new RTU. See <br /> IBC Section 1604.1. The following comments should be addressed: <br /> a. The weight of the RTU was considered. A 300-pound exhaust fan will be located <br /> immediately adjacent to the RTU and should be included in the combined weight. <br /> b. The framing analysis should include other equipment being supported by the same framing <br /> as the new RTU. <br /> c. The analysis does not appear to include snow loading. See IBC Section 1605. The snow <br /> load may be considered using either of the following approaches: <br /> Design i,itis community in mint: <br />