2015-0447 Hellene remodel-proposed ADU5 - Travers Arch.pdf
City of Edmonds
PLAN REVIEW COMMENTS
BUILDING DIVISION
(425) 771-0220
DATE: September 17, 2015
TO: Mark Travers Architect
mark@marktraversarchitect.com
FROM: Chuck Miller, Plans Examiner
RE: Plan Check: BLD2015-0447
Project: Hellene remodel-proposed ADU
Project Address: 18908 Olympic View Drive
During a review of the plans by the Building Division for the above noted project, it was found that the
following information, clarifications, or changes are needed. A complete review cannot be performed until
the revised plans/documents, including a written response indicating where the clouded or otherwise
highlighted changes can be found on the revised plans, have been submitted to a Permit Coordinator.
Reviews by other divisions, such as Planning, Engineering, or Fire, may result in additional comments.
Items that recur on this list appear in italics.
On sheet A.3 Elevations, Details, & Schedules:
1.Detail 5 Rated Wood Column, Typical and Detail 6 - Rated Wood Beam, Typical Indicate on the
plans the required installation criteria of the one-hour fire-resistance rated (when tested in
accordance with ASTM E 119 or UL 263) supporting construction of the floor/ceiling over the ADU
per IRC R302.3.1, similar to that noted in details 3 and 4 on sheet A3. The response to the plan
review comment states: The notes for gypsum board installation are added on the assemblies.
The note regarding the required installation criteria for Detail 5 Rated Wood Column has been
added to Detail 3 1-HR Interior Wall. The listed assembly in Detail 3 is only for a wall or
partition of at least 100 square feet in area with no edge dimension less than nine feet (see Gypsum
Association Fire Resistance Design Manual Section II - Requirements For Fire Protection Wall
and Partition Systems), not for columns. Looking further through the Gypsum Association Fire
Resistance Design Manual, the Underwriters Laboratories Certification Directory, and
International Building Code (IBC) chapter 7, it appears to be difficult to find any listed assembly that
provides 1-hour fire-resistance protection when using a wood column. The note regarding the
required installation criteria for Detail 6 Rated Wood Beam, Typical has been added to Detail 4
Floor/Ceiling System, 1-HR Wood Framed, Existing. The listed assembly in Detail 4 is only for
a floor/ceiling system where the bottom of the beam projects 6 inches or less below the plane of the
ceiling (see Gypsum Association Fire Resistance Design Manual Section II - Requirements For
Fire Protection Beam, Girder, and Truss Protection Systems), not for beams requiring individual
encasement protection. Looking further through the Gypsum Association Fire Resistance Design
Manual, the Underwriters Laboratories Certification Directory, and International Building Code
(IBC) chapter 7, it appears to be difficult to find any listed assembly that provides 1-hour fire-
resistance individual encasement protection when using a wood beam.