2011-0486 Ayers ADU Addition.pdf
City of Edmonds
PLAN REVIEW COMMENTS
BUILDING DIVISION
(425) 771-0220
DATE: June 30, 2011
TO: Tom Leren
The Leren Company
Email: tom@lerendesign.com
FROM: Leif Bjorback, Assistant Building Official
RE: Plan Check: 2011-0486
Project: Ayers Addition
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Project Address: 1225 7 Avenue S
During review of the plans for the above noted project, it was found that the following information,
clarifications or changes are needed. Please provide written responses as to where the changes can
be found on the plans, and submit revised plans/documents to Marie Harrison, Senior Permit
Coordinator.
1.Please show on the plans a one hour fire rated wall between the existing house and the new
ADU. It would be acceptable to design the wall with 5/8 inch Type X drywall on the new
side, assuming there is at least ½ inch drywall on the existing side of the wall. These
elements, combined with the wood stud framing and fiberglass insulation will provide the
required level of protection. IRC 302.3 and IBC 721.6
2.What will be the primary heat source for the ADU? Please indicate on the plans that there
will be a separate programmable thermostat for the ADU heating system. WSEC 503.8
3.The whole house ventilation system shown on the plans indicates an exhaust fan on a timer
as described in IRC M1508.4. Please indicate how outside air will be provided to each
habitable room to satisfy M1508.4.5.
4.Provide specifications for the closed cell ceiling insulation to show a listing by one of the
standards listed in IRC R316.6. This may be listed as a deferred submittal, however, the
material must be approved by the building department prior to installation.