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Mr. Calvin Vander Veen <br />Vander Veen Construction <br />Plan Check Number: B1908-021, First Structural Review <br />November 1, 2019 <br />Structural <br />General: <br />The structural design contains multiple issues that do not comply with the building code. The <br />drawings also appear to include unused information that is not pertinent to this project. Review <br />comments have been provided to assist the engineer -of -record (EOR) in revising the design. <br />Additional comments may be provided pending a review of the revised submittal documents. <br />See IBC Sections 107.2.1, 1603.1, 1604.1, 1604.4, and 1613.1. <br />2. The project includes post -installed mechanical anchors installed in the existing concrete <br />foundations. Documentation shall be submitted establishing the minimum concrete strength of <br />the existing foundations. See IBC Section 1604.2 and 1901.2, and ACI 318-14 Chapter 27. <br />3. Note 2 of the "Concrete and Reinforcing" section of the General Notes on Sheet S-0 specifies <br />concrete strengths of 2,500 psi for all foundation components. The project does not appear to <br />include new foundations. Where new foundations do occur, concrete elements exposed to <br />freeze -thaw cycles and water qualify as Class F2 concrete per ACI 318-14 Table 19.3.1.1. Per <br />ACI 318-14 Table 19.3.2.1, the minimum concrete strength for Class F2 concrete is 4,500 psi. <br />The minimum concrete strength for exposed concrete on Sheet S-1 shall be revised as required. <br />See IBC Section 1901.2. <br />4. The General Notes and Specifications on Sheet S-0 include information that is not included in <br />the project. Unused information includes, but is not limited to: new concrete and <br />reinforcement, structural steel, and special inspections for all items not required in the project. <br />The drawings should be revised to remove information that is not included in the project. See <br />IBC Sections 107.2.1. <br />5. Details 2/S-3 and 4/S-3 include information that is not used in the proposed project. <br />Specifically, the design only includes shear wall Type SW6 per the plans on Sheet S-1, and the <br />project does not include cast -in -place anchors. Other unused information may exist. The <br />drawings should be revised to remove information that is not included in the project. See IBC <br />Sections 107.2.1. <br />Foundation System: <br />6. Sections 5/S-2 and 9/S-2 show the existing foundation walls that will support the additional <br />structure. The sections do not provide dimensions and it is presumed that the actual <br />construction has not been confirmed. Documentation substantiating the construction of the <br />foundations, including reinforcement, shall be submitted for review. See IBC Sections 107.2.1 <br />and 1603.1. The material properties for the existing construction shall be listed in the General <br />Notes on Sheet S-0. <br />7. Continuing with the previous comment, calculations substantiating the capacity of the <br />foundations to support additional loads shall be submitted for review. See IBC Section 1604.1 <br />and 1604.4. <br />3200 Cedar Street 425.257.8810 everetteps@everettwa.gov <br />Everett, WA 98201 425.257.8857 fax everettwa.gov/permi <br />Page 26 <br />