REVIEWED BLD2022-1041+NARRATIVE+8.5.2022_6.49.26_AM+3034415REVIEWED
BY
RECEIVED 1 CITY OFEDMONDS E
; BUILDING DEPARTMENT;
Aug 0$ 2022 ll l l
r�
fill
CITY OFEDMONDS...............................................:BLD2022-1041
DEVELOPMENT SERVICES
DEPARTMENT BUILDING CONSULTANTS
August 1, 2022
City of Edmonds Building Department
121 51h Ave. N
Edmonds WA 98020
Re: Elevated Walkway Fire Rating and Venting; Exterior Building Renovation Project
Property: Boardwalk of Edmonds Condominiums; 1024 5th Ave S. Edmonds WA 98020
To Whom it May Concern,
J2 Building Consultants, Inc. (J2) is providing weatherization design and detailing for the proposed exterior building
renovation at the property noted above. Limited structural design for walkway/stairway repairs is also being provided.
The project includes 5 residential wood framed buildings, originally constructed in 1983, totaling 29 residential units
and a single common area room. Exterior access for the residential units is via a combination of hardscaped walkways
and elevated walking surfaces. The proposed project includes replacing the water damaged elevated walkway surfaces,
sheathing and soffits with new materials. The purpose of this memo is to clarify our design assumptions in regards to
walkway assembly fire ratings.
The proposed project design intent includes maintaining all existing fire -ratings. It is not intended as a comprehensive
retro-fitting of the fire resistance of existing building assemblies. It does not appear that the exiting walkways consist
of a fire -rated system. The existing assembly includes a single layer of plywood under the waterproofing membrane
surface, and there is a vinyl plywood soffit under the framing that is un-vented. The proposed assembly is to "upgrade"
the fire rating to a 1-hour assembly in general conformance with GA file FC 5420. However, the proposed assembly also
includes venting the joist spaces by adding soffit vents as required by IBC Section 2301.12.2.6. While this likely reduces
the intended GA assembly fire rating, in our opinion, the proposed assembly is not less fire resistant compared to the
existing assembly.
Please advise of any concerns and/or if further clarification is required.
Sincerely,
J2 BUILDING CONSULTANTS, INC.
Ryan Paddock, P.E., Principal
Mukilteo Headquarters Portland Office Salt Lake City Office
(855) 774 5600 8425 4411 Avenue West 4504 S Corbett Avenue, Suite 100 740 E 3900 S, Suite 208
Mukilteo, WA 98275 Portland, OR 97239 Salt Lake City, LIT 84107
www.J2Consultants.com (425) 774-5600 (503) 546-8212 (385) 202-6377