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Mr. Keith Ta <br /> Great Sun Corp. <br /> Plan Check Number: M1808-015, First Review <br /> August 10, 2018 <br /> 2. The proposed hood weighs more than 20 lb and is suspended from the framing above. The <br /> hood shall be provided with lateral bracing per ASCE 7-10 Section 13.6. Alternatively, the <br /> hood may be braced by a direct connection to the adjacent wall provided that the minimum <br /> 18-inch clearance is maintained. See IBC Sections 1604.1 and 1613.1. <br /> 3. The duct is provided with fire wrap at the interior of the building. The wrap terminates at the <br /> exterior wall. The wrap should continue a minimum of 18 inches outside the exterior wall if <br /> the wall construction includes combustible materials (e.g., siding, exterior wall sheathing, etc.). <br /> The 18-inch clearance shall be measured perpendicular to the wall surface. Clearances may be <br /> reduced per IMC Table 308.4.2. See IMC Section 506.3.6. <br /> 4. The duct is shown running up the exterior wall and along the roof. The duct does not appear <br /> to be enclosed or constructed of a rated zero-clearance duct. The duct shall have a minimum <br /> 18-inch clearance to all surfaces containing combustible construction per IMC Section 506.3.6. <br /> Clearances may be reduced per IMC Table 308.4.2. Documentation substantiating the reduced <br /> clearance shall be submitted for review. The exhaust fan shall maintain a minimum clearance <br /> of 18 inches from combustible construction per IMC Section 506.5.4. <br /> 5. The building section shows a single support bracket along the vertical run of the duct; no <br /> bracket is shown along the horizontal run. Duct spans and supports shall be designed for wind <br /> loading per IBC Sections 1604.1 and 2306.1, and ASCE 7-10 Chapter 30. Supports shall not <br /> exceed the spacing limits per the SMACNA HVAC Duct Construction Standards per IMC Section <br /> 603.10. Details for the supports and connections shall be provided. See IBC Section 107.2.1. <br /> 6. Up-blast fans serving Type I hoods shall be installed with a hinge, restraint, and flexible <br /> electrical cable to permit inspection and cleaning. These do not appear to be specified. The <br /> drawing should be revised. See IMC 506.5.3. <br /> 7. The hood appears to be partially suspended from the framing above using threaded rods and <br /> unistrut bars. The required fasteners between the bar and framing should be specified. <br /> Documentation verifying the connection is adequate for the supported load should be <br /> submitted for review. See IBC Sections 107.2.1, 1604.1, and 1604.4. <br /> This review has been performed for general compliance with the building codes as adopted and <br /> amended by the state of Washington and the city of Everett. Corrections and comments made <br /> during the review process do not relieve the project from compliance with code and permit <br /> requirements. The designers-of-record are responsible for a complete design in accordance with <br /> the laws of the state of Washington. <br /> If you have any questions or require additional clarification, please contact us. <br /> Respectfully, <br /> Drew Martin, P.E., S.E. <br /> Associate Engineer/ Commercial Plans Examiner <br /> (425)257-8813 <br /> dmartin@everettwa.gov <br /> S:\BMartin\2018\M1808-015.docx <br /> 16g5-e—i—o72Th <br /> CITY OF EVERETT • 3200 Cedar Street • Everett,WA 98201 • (425) 257-8810 • Fax(425) 257-8857 <br />