6617 ASSOCIATED BLVD AMAZON Geotech Report 2022-10-25

• • �\ KL E/NFEL DER • Bright People.Right Solutions. • 4.3 SEISMIC DESIGN • • 4.3.1 2018 IBC Seismic Design Parameters • • The City of Everett, Washington references the 2018 International Building Code (IBC) as their • governing code. According to the 2018 IBC, every structure and portion thereof, including • non-structural components that are permanently attached to structures and their supports and • attachments, shall be designed and constructed to resist the effects of earthquake motions in accordance with ASCE 7-16. The seismic design category for a structure may be determined in • accordance with Section 1613 of the 2018 IBC. Based on the field explorations, we classify the • site as Site Class D, Stiff Soil. Approximate coordinates for the site are noted below. • • • Latitude: 47.939319° N • • Longitude: -122.245024° W • The Risk-Targeted Maximum Considered Earthquake (MCER) mapped spectral accelerations • for 0.2 seconds and 1 second periods (SS and Si) were estimated using Section 1613.2 of the • 2018 IBC and the OSHPD seismic design maps web-based application (available at • https://seismicmaps.org/). The mapped acceleration values and associated soil amplification i factors (Fa and Fv) based on the 2018 IBC and corresponding site modified spectral •• accelerations (SMs and SM1) and design spectral accelerations (Sips and So,) are presented in • Table 3. • Table 3 • 2018 IBC Seismic Design Parameters • Design Parameter Recommended Value ASCE 7-16 Reference • Site Class D Table 20.3-1 • Ss (g) 1.354 Fig 22-1 S� (g) 0.48 Fig 22-2 • Fa 1.0 Table 11.4-1 • Fv Null (1.7) Table 11.4-2 PGA 0.584 Fig 22-9 • SMs (g) 1.354 Eq. 11.4-1 SM, (g) Null (0.816) Eq. 11.4-2 • Sips (g) 0.903 Eq. 11.4-3 • Soi (g) Null (0.544) Eq. 11.4-4 • PGAM (g) 0.643 Eq. 11.8-1 • • 20203884.001A/SEA20R110164 Page 14 of 28 June 1, 2020 ©2020 Kleinfelder • •