20070131085901.pdfOF EDV City of Edmonds
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yPLAN REVIEW COMMENTS
BUILDING DIVISION
�St S s9° (425) 771-0220
DATE: January 31, 2007
TO: Danny Dallum
Aeco Engineered Systems
FAX: 253-854-8220
FROM: Ann Bullis, Assistant Building Official
RE: Plan Check: #2007-0051
Project: Stevens Health Center — Mechanical
Project Address: 21701 76"' Ave W
During review of the plans for the above noted project, it was found that the following information,
clarifications or changes are needed. Provide written responses to each comment and where changes can be
found on the plans. Submit 2 sets of revised plans/documents to Marie Harrison, Permit Coordinator.
1. During the plan review process for the corridor remodel under permit #2006-1008, the following
communication was provided between the City and architect regarding the mechanical system. This has
not been incorporated into the mechanical design currently under review. The design as currently shown
is not permitted per IBC 1016.4 and IMC 601.2 (also see State Amendment). A complete review will be
done once the revised plans are submitted:
• City Comment #7 from comments dated 1/12/07: Although mechanical is listed as a deferred
submittal since the mechanical system appears to be located within the corridor (below the 1 -hour
lid, but above the unrated ceiling grid system) describe on the coversheet of the plans how the
mechanical system will be altered to allow for corridor protection.
• Architect response to item #7 in letter dated 10/26106:
7. Mechanical system is to be under a separate, deferred permit. Please see attached e-mail dated October
26, 2006 from ACCO Engineered Systems (the HVAC subcontractor) describing both the proposed work
within the corridors and the modifications required to the existing corridor construction. An expansion of '
_their e-mail is as follows:
a- 'All hallway mechanical air penetrations will have smokelfre dampers insta[fed.' This statement
means that wherever duct penetrations or otheropenings are made, (either for fresh air supply
ducting or for return air plenum connections) rated, tested and approved smoke/fire dampers will
be installed across the openings. These smokelfire dampers will be set to close upon activation of
the building fire alarm system, a localized smoke detector, or the building electrical system.
b.. 'All hallways penetrations associated with mechanical systems will be tire -stopped per code: This
statement means that all one-hour corridor wall penetrations made by items such as plumbing
tines, HVAC ductwork, line voltage electrical wiring, and low voltage control wiring will be fire
stopped using a UL approved fire stopping system with appropriate F and T ratings. The
Contractor is responsible for obtaining the appropriate firestopping system design relative to the
proposed penetration and for review of these firestopping system designs with the City Inspector.
c. 'HVAC units located above hallways walls will be relocated outside of corridor or into tenant
spaces.' This statement means that because several of the existing HVAC units are located
directly above the one-hour corridor walls that are required to be extend to the underside of the
structure above, the HVAC units will need to be moved. At the Contractor's option, these units
may be relocated on either the tenant side of the wall or on the corridor side of the wall.