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l <br /> Ms. Allyson Chang <br /> Matvey Foundation Repair <br /> Plan Check Number: B1907-001, First Building Review <br /> July 9, 2019 <br /> 6. The concrete foundation sizes have been determined based on a proposed allowable soil <br /> bearing strength of 2,000 psf. The project does not include a geotechnical report and has <br /> referenced IBC Table 1806.2 for the presumptive values. Based on a lack of information on the <br /> site soils, the soil strength shall not exceed the lowest value of 1,500 psf. The foundation <br /> design shall be revised. <br /> 7. The proposed construction of the concrete foundations appears intended to bear directly on the <br /> soils under the building with compaction or replacement with sound structural fill (e.g., compact <br /> gravel, etc). The structural engineer shall verify. Detail 2/S-2.00 shall include a note stating <br /> that verification of the minimum soil bearing strength shall be performed as required under the <br /> "Special Inspection"section of the General Notes on Sheet S-1.00 prior to constructing the <br /> foundations. See IBC Section 1705.6. <br /> 8. The Repair Plan 2/S-1.00 appears to indicate that the jacks may be used to permanently <br /> support the building in lieu of the post-and-footing foundations. The structural engineer shall <br /> verify. Additional documentation shall be submitted verifying that the jack is suitable for this <br /> use. The documentation shall verify that the jacks have sufficient corrosion resistance for long- <br /> term exposure to unconditioned air and contact with soil. A bearing calculation for the jack <br /> base shall be submitted for review. See IBC Sections 107.2.1, 104.11, 1603.1, 1604.1, and <br /> 1604.4. <br /> Gravity System: <br /> 9. The structural calculations have determined the maximum spacing of the new foundations <br /> based on the allowable spans of the existing floor beams. It is presumed that the new spacing <br /> will be similar to the existing spacing. In addition, it is presumed that the spacing does not <br /> result in any cantilever beam conditions or conditions where a beam end must transfer shear to <br /> an adjacent beam end (i.e., all existing beam ends bear on the wood posts). The structural <br /> engineer shall verify. The bearing of all beam ends, and the minimum bearing length, shall be <br /> specified in the drawings. Alternatively, supplemental calculations shall be submitted <br /> substantiating the beam spans and connections, and the maximum spans and connections shall <br /> be specified in the drawings. See IBC Sections 107.2.1, 1603.1, 1604.1, and 1604.4. <br /> 10. Detail 2/S-2.00 species support of the wood posts on the concrete footings-on-grade, with <br /> direct bearing on a steel column base achorage. While the posts are not in direct contact with <br /> the concrete, they are in close proximity with the concrete and adjacent soil. It is <br /> recommended that Detail 2 specify application of a preservative treatment to the post bases to <br /> prevent deterioration. See IBC Section 2304.12.1.4. <br /> 11.The Repair Plan 2/S1.00 indicate the presence of an unidentified existing steel beam. Based on <br /> the building construction and a review of City of Everett records, the beam does not appear to <br /> be original construction and was not installed with a building permit. The purpose of the beam <br /> in the gravity load path shall be clarified. If the beam is required to supplement or replace the <br /> existing wood beam, documentation substantiating the beam design shall be submitted for <br /> review. The beam size, length, and position in the floor framing shall be specified. Details for <br /> the connection of the posts to the beam shall be included in the construction drawings. See <br /> IBC Section 107.2.1, 1603.1, 1604.1, and 1604.4. <br /> O3200 Cedar Street © 425.257.8810 , , everetteps@everettwa.gov <br /> Everett,WA 98201 425.257.8857 fax everettwa.gov/permits <br /> g 3of4 <br />