BLD18-1498 - Mazda Service Center - STRUCT Corr. (Rvw-3, beck, 4-13-2019).doc
April 13, 2019
Leif Bjorback
Building Official
City of Edmonds
121 5th Avenue North
Edmonds, WA 98020-3145
Subject: Mazda Service Center Addition (Structural Review)
Permit: BLD18-1498
Per your request, Beck & Associates has completed a third structural review of the drawings and calculations for conformance with the 2015 International Building Code (IBC), as adopted
and amended by the State of Washington and the City of Edmonds.
Our review of the plans and calculations indicates that corrections are necessary prior to permit issuance. The applicant should address the following comments in itemized letter format
in addition to making corrections & revisions to the drawings. Corrections and revisions to the drawing should be clouded so that they are clearly identifiable.
Per our previous comments (below in blue), all unreinforced masonry walls are required to be anchored for out of plane loading. The architectural drawings show that an existing masonry
wall (assumed to be unreinforced) is located along grid B. Provide design and detailing for the anchorage of this wall back to the existing floor diaphragm. Anchorage forces are required
to be developed into the diaphragm so they can be resisted.
If there are unreinforced masonry walls in the existing structure, the alteration work is required to include installation of wall anchors unless an evaluation demonstrates compliance
of existing wall anchorage. IEBC 403.6
Detail 7/S201 was deleted from the drawing set. However, this condition (new opening in an existing concrete / tilt panel wall) occurs on this project. The detail needs to be included
in the drawing set. Additionally, the plans should be updated to identify where the condition occurs. Coordinate with architectural plans.
Reference new detail 7/S205. The ‘new stud wall’ identified in the detail is a new shear wall that is located along the full length of the building. The existing masonry/concrete walls
along this line are not included in the analysis to resist shear (rightly so). Neither was a demand/capacity analysis been completed to demonstrate that the existing masonry/concrete
walls can be utilized as shear walls. According to the analysis, all lateral loads along this line are required to be transferred into the new wood shear wall. Update the detail to
demonstrate how loads from the existing floor will be transferred into the new wood shear wall. No mechanism is currently provided.
Please contact me should you have any questions.
Respectfully,
Douglas Beck, PE, SE
Beck & Associates, PLLC
Permit BLD18-1498 (Structural – Rvw-3)
April 13, 2019
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16425 SE 66th Street, Bellevue, WA 98006 ● beckpllc@msn.com ● PH: 206-313-3739
Beck & Associates, PLLC
Structural Engineering & Code Consulting
16425 SE 66th Street, Bellevue, WA 98006 ● beckpllc@msn.com ● PH: 206-313-3739