3810 RIVERFRONT BLVD BLDG B 2025-07-07

Mr. Eric Evans Shelter Holdings Plan Check Number: B1912-032, First Structural Review January 3, 2020 Schedule Note 2 references Section 06100 "Rough Framing on Sheet S1.00 for the framing species and grade, which specifies hem -fir (HF) framing for the 4-inch studs. Sheets S3.9113 and S3.9213 appear to indicate that many of the shear walls will be 4-inch walls. The notes should be revised to consistently specify DFL-framing. Alternatively, the calculations should be revised to reduce the shear wall capacities for HF-framing. See IBC Sections 1603.1 and 2306.1, and AWC SDPWS-15 Table 4.3A Footnote 3. 21. The structural calculations for the wood shear wall holdowns include a calculation for the side - face blowout mechanism per ACI 318-14 Section 17.4.4. The calculations appear to indicate that the anchor tensile capacity for this mechanism is less than required by Section 17.2.3.4.3(a), and instead are proposing supplemental hairpins to prevent the blowout mechanism. ACI 318-14 Chapter 17 does not recognize providing hairpins as an alternative to satisfying Section 17.4.4. It is not clear how the submitted calculation substantiates an alternative method. Revised documentation that more clearly substantiates the proposed design should be submitted for review. See IBC Sections 104.11 and 1901.2. 22. The design for the shear wall sill plate anchor bolts does not appear to be provided in the structural calculations. The earthquake component of the shear forces exceeds 20% of the total shear (i.e., the earthquake force is 100% of shear force). The earthquake component shall be increased per the provisions of ACI 318-14 Section 17.2.3.5.3. Revised calculations substantiating the anchor bolt design should be submitted for review. Alternatively, it appears the design may satisfy the IBC Section 1905.1.8 amendments to ACI 318-14 Section 17.2.3.5.2. Some revisions may be required, including increasing the minimum anchor bolt length to 7 inches in Note 10 of Detail S1.02. The design load shall be determined per ASCE 7-10 Section 12.4.3.2 Equation 7. See IBC Sections 1604.10, 1613.1, and 1901.2. This review has been performed for general compliance with the building codes as adopted and amended by the state of Washington and the city of Everett. Corrections and comments made during the review process do not relieve the project from compliance with code and permit requirements. The designers -of -record are responsible for a complete design in accordance with the laws of the state of Washington. If you have any questions or require additional clarification, please contact us. Respectfully, Drew Martin, P.E., S.E. Associate Engineer / Commercial Plans Examiner (425)257-8813 dmartin@everettwa.gov S:\BMartin\2019\Bl9l2-032—Rl-STR.docx 3200 dar 0 Everett WAStreet98201 O 425.257.88577 fax O everett asgov/permitgov s Page 7 of 7