2900 GRAND AVE WATERLINE GYM 2025-01-10

• • QUANTUM I CONSULTING ENGINEERS October 6, 2023 Cal Bearman, P.E., Commercial Building Plans Examiner D ECEOVE[1City of Everett OCT 0 9 2023 3200 Cedar Street Everett,WA 98201 CITY OF E\JERETT Permit Services Subject: B2306-070—2900 Grand Avenue Quantum Project#23208.01 Dear Cal Bearman: We have received the correction notice on the above-referenced project dated 9/27/2023. Below are our responses to the structural comments. All changes to the drawings due to a plan check comment have been clouded on the drawings. STRUCTURAL Lateral System: 1. It appears that the lateral load path at the new mezzanine framing may be the two columns that the framing attaches to and not the relatively flexible new shear walls. Please verify that the existing columns have the ability to carry lateral loading from the mezzanine. IBC 1604.4. See the attached supplemental calculations. Based on the deflection derived from the story shear applied to two column and also the two shear walls, the shear walls are slightly stiffer than the columns(they deflect slightly less).Additionally, although the shear walls are stiffer, the existing columns have the structural capacity to resist the entire mezzanine seismic load if the shear walls are more flexible than calculated. Miscellaneous: 2. It appears that a note is missing on detail 12 sheet S3.1 that is similar or the same as note 2 on detail 10 sheet 53.1,or the note provided on detail 12 refers to the wrong detail. See the revision to detail 12/S3.1. Detail 10/S3.1 referenced in lieu of 10/S5.1 * * * * * Please feel free to call me at 206-957-3900 if you have any questions regarding our responses. Sincerely, �, J, Quantum Consulting Engineers, LLC � , John Riley, P.E.,S.E., Principal '�°p‘4428963 ,cer. Project Manager 4 ONL .ems QUANTUM CONSULTING ENGINEERS-1511 THIRD AVENUE SUITE 323-SEATTLE WASHINGTON 98101 I T 206.957.3900 www.quantumce.com