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Port Gardner Storage Facility Volume 7 Attachment O <br /> Page 27 <br />CITY OF EVERETT ⋅ 3200 Cedar Street ⋅ Everett, WA 98201 ⋅ (425) 257-8800 ⋅ Fax (425) 257-8882 <br /> <br />Q137 - In the geotechnical report, required ultimate axial loads are provided for static <br />loading (90-kips), seismic loading (55-kips), and downdrag loading (ranging from 5-kips <br />to 20-kips) . Please confirm that the static and downdrag loads should be added and act <br />in compression. Please confirm that the seismic loads act in tension. <br />Confirmed, downdrag and static are added and act in compression. The seismic <br />loads can be in either tension or compression. <br />Q138 - Can you confirm all micropiles are required to meet the same axial, seismic and <br />downdrag loads listed in the project geotech report Table 2? <br />Confirmed. <br />Q139 - Can we perform verification tests on a production micropile or do we have to <br />install a sacrificial micropile for each verification test? <br />Performing verification test on part of the structure is a deviation from the <br />specification. The contractor can perform the verification test at risk but would be <br />responsible for any changes to the pile layout and structural design resulting <br />from a failed test. <br />Q140 - The geotechnical report provides ultimate micropile loads that were determined <br />using AASHTO LRFD Bridge Design Specifications. The project specifications provide <br />micropile testing criteria based on FHWA allowable loads. Please confirm that the loads <br />provided in the geotechnical report have been factored and provide testing criteria for <br />factored design load, or, please provide allowable design micropile loads for design and <br />use with the FHWA testing criteria included in the project specifications. <br />The required ultimate capacity of the piles is listed in Table 2 of the May 2025 <br />Geotechnical Report Port Gardner Wet Weather Design. In accordance with <br />Section 4.2 of the geotechnical report, the ultimate capacity should include a <br />minimum factor of safety of 2.0 for static load conditions. For micropiles with an <br />ultimate axial capacity of 90 kips, the design load (DL) referenced in the micropile <br />specifications is 45 kips. <br />Q141 - Please confirm micropile loading is axial only and no lateral or bending loading <br />will be considered. <br />Confirmed. <br />Q142 - The project specifications state that total vertical movement should be less than <br />½” at 1.0DL. Micropiles may deflect 1-inch or more when load testing to 1.0DL. Please <br />confirm this is acceptable. <br />Acceptance criteria shall adhere to 31 63 33 3.03.D.2. <br />Q143 - Please confirm Gr150 threadbar can be used for micropile threadbar.