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Mr. Mark Thunberg <br />Snohomish County Property Management <br />Plan Check Number: B1802-011, First Review (Structural) <br />June 18, 2018 <br />Geotechnical <br />1. The "Foundations" section of the General Notes on Sheet S-003 states that a geotechnical <br />report has been prepared for the project by Hart Crowser, dated February 7, 2018. The <br />geotechnical report was not included with the submittal documents and should be submitted <br />for review. See IBC Section 1803.6. <br />2. The shear wall foundation at Grid C/8-11 utilizes micropiles in combination with new and <br />existing spread footings to provide bearing. See IBC Section 1803.6 Item 5. The geotechnical <br />report should provide recommendations for the following: <br />a. Confirm recommendations represent concurrent resistance by the piles and footings. <br />b. Verify spread footing bearing and subgrade modulus recommendations apply to the <br />existing footings. <br />c. Provide vertical design properties for the micropiles. <br />Structural <br />General: <br />1. Structural and geotechnical special inspections are required for this project. A table of the <br />required inspections is provided in the "Special Inspection" section of the General Notes on <br />Sheet S-003. The table shall be revised to specify the extent of each inspection (e.g., <br />continuous, periodic). See IBC Sections 107.1 and 1704.3.1. <br />2. Continuing with the previous comment, the table of special inspections appears to be <br />incomplete. The foundation plan on Sheet S-200 includes the installation of micropiles. The <br />table should be revised by adding additional inspections for driven deep foundations. See IBC <br />Section 1705.7 and Table 1705.7. <br />3. The project includes work that will be performed on the premises of fabricators' shops. Special <br />inspections are required to be performed by the fabricators unless they are registered and <br />approved to perform work without special inspections. The General Notes on Sheet S-003 <br />should be revised to list work being performed by approved fabricators. Work not being <br />performed by approved fabricators should be added to the list of special inspections. See IBC <br />Sections 1704.2.5, 1704.2.5.1, and Section 1704.5 Items 1 and 2. The following work shall be <br />specified in the notes: <br />a. Concrete reinforcement fabrication and bending (IBC Section 1705.3) <br />b. Prefabricated structural steel members and stairways (IBC Section 1705.2). <br />4. Geotechnical observations should be performed for this project based on a review of the <br />structural drawings. A list of the required geotechnical observations should be provided in the <br />"Foundations" section of the General Notes on Sheet S-003. See IBC Sections 107.1 and <br />107.2.1. The following is a summary based on a review of the construction drawings:. <br />a. Installation of temporary shoring system at excavations (IBC Section 1803.5.10). <br />b. Movement monitoring of adjacent structures (IBC Sections 1803.5.7 and 1804.1). <br />c. Underpinning of adjacent structures (IBC Sections 1803.5.7 and 1804.2). <br />d. Placement and compaction of structural backfill (IBC Section 1803.4). <br />Page 2 of 11 <br />CITY OF EVERETT • 3200 Cedar Street • Everett, WA 98201 • (425) 257-8810 • Fax (425) 257-8857 <br />