2721 WETMORE AVE MARQUEE APARTMENTS 2023-06-28

• Mr. Art Skotdal Skotdal Real Estate Plan Check Number: PW1907-055, First Building Review - Shoring August 2, 2019 figure may be intended to represent loading for neither of these two systems (e.g., cantilever or single-tieback wall systems). It is noted that the version of Figure 3 submitted to the city does not depict a tieback, or reference either a tieback or a cantilever system, which are indicated on the consultant's version of the report. Lastly, Figure 3 only includes 4 notes, verses approximately 9 in the consultant's version. The applicability of Figure 3 should be clarified. The correct version of Figure 3 should be included in the report. Alternatively, the figure should be removed. 7. The proposed shoring system includes a wide-flange and steel-brace system in the northeast corner of the Shoring Plan on Sheet SS2.0. See also Section 4/SS4.1. Recommendations for the soil design parameters on this system should be provided in the report. 8. The Shoring Plan on Sheet SS2.0 includes multiple"vertical soil nails"along the portions of the system adjacent to the existing buildings. The vertical soil nails consist of wide-flange sections that are both non-continuous to or minimally-embedded in the bottom-of-excavation soils. The purpose of these elements and their contribution to the wall system should be discussed in the recommended. Additional design parameters associated with these elements should be provided as needed. 9. The recommendations for the various shoring wall systems appear to generally address wall systems with flat backfill. The proposed shoring system includes walls supporting sloping backfills at multiple locations. The recommendations should be revised to incorporate additional soil pressures due to sloping backfills. 10. The recommendations for the various shoring wall systems do not include live load surcharges, or limit the surcharge pressures to a value consistent with a 250 psf live load. The propose shoring design includes live loads in excess of this value. Sheet Sections 8/SS4.1 and 9/SS4.1. The shoring plans also show building loads of up to 400 psf per Sections 1/SS4.1, 2/SS4.1, and 6/SS4.1. The recommendations should be revised as needed to address the proposed loading. Structural 1. The geotechnical report included in the submittal documents was prepared by Associated Earth Sciences, Inc., dated May 28, 2019. The report was discussed via telephone with Steve Siebert on August 1, 2019. Based a review of the report and discussion with Mr. Siebert, it appears the report may contain multiple discrepancies and omissions. A copy of the report is provided at the beginning of the structural calculations. It is noted that the Figure 3 included in the version included in the calculations is not consistent with geotechnical recommendations in the narrative, nor is it consistent with the geotechnical report included with the submittal documents. The structural calculations also does not include the Figure 4 included in the geotechnical report. See other comments in the Geotechnical section of this review letter. The recommended soil design parameters shall be verified, and the structural design shall be reviewed and revised as needed. See IBC Section 1604.1. 0 3200 Cedar Street © 425.257.8810 O everetteps@everettwa.gov Everett,WA 98201 425.257.8857 fax everettwa.gov/permits Page3of5