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Cc:'holly.shoubridge@mortenson.com'<holly.shoubridge@mortenson.com> <br />Subject: RE: Providence 9th floor mechanical review B1903-002 <br />Mr. Lee <br />Thanks for the question and agree with the expedient approach. Yes the intent is using Exception 3 to Section <br />717.5.2 with minimum 26 gauge hard ductwork to comply, no flex ducts at terminals or in those ducts. <br />Audie Wallace <br />Project Director <br />p 206.832.8019 1 c 206.930.0436 <br />McKinstry <br />Consulting I Construction I Energy I Facility Services <br />www.mckinstry.com <br />From: Tony Lee <TLee@everettwa.gov> <br />Sent: Tuesday, March 19, 2019 10:12 AM <br />To: Audie Wallace <audiew@McKinstry.com> <br />Cc: 'holly.shoubridge@mortenson.com' <holly.shoubridge@mortenson.com> <br />Subject: Providence 9th floor mechanical review B1903-002 <br />Hello Mr. Wallace — <br />I have just one comment regarding the plan review for Providence — <br />There are some ducts that penetrate one -hour fire barriers surrounding Clean Rooms A9055 and C9156 that are not <br />provided with fire dampers and have flexible connections to their (outlet or inlet) terminals at some point along the <br />trunk line (outside of the clean rooms in question). I believe the design intent is to employ Exception 3 to Section 717.5.2 <br />however that exception requires continuous No. 26 gage ductwork with no flexible ducts or terminal connections. Please <br />clarify. <br />I believe this email to be more expedient than a formal letter for just one comment. Let me know if I can answer any <br />further questions. Thank you, Tony <br />0 <br />Tony Lee <br />Building Official I Permit Services <br />425.257.8812 13200 Cedar Street, 2�d Floor, Everett, WA 98201 <br />everettwa.gov/permits I Facebook I Twitter <br />Note: Emails and attachments sent to and from the City of Everett are public records and may be subject to disclosure pursuant to the Public <br />Records Act. <br />C <br />