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Alliance Residence October 18,2016 J.N.: 2530.00 Page 12 6.2 SEISMIC DESIGN PARAMETERS For design of the project in accordance with Chapter 16 of the 2013 CBC, the following table presents the seismic design factors: TABLE 6.1 2013 CBC Seismic Design Parameters Parameter Value Site Class D Importance Factor I, II, III Mapped MCE Spectral Response Acceleration, short periods, SS 1.512 Mapped MCE't Spectral Response Acceleration, at 1 -sec. period, Si 0.559 Site Coefficient, Fa 1.0 Site Coefficient, Fv 1.5 Adjusted MCER Spectral Response Acceleration, short periods, SMS 1.512 Adjusted MCER Spectral Response Acceleration, at 1 -sec. period, SMI 0.839 Design Spectral Response Acceleration, short periods, SDS 1.008 Design Spectral Response Acceleration, at 1 -sec. period, SDI 0.559 MCER = Risk-Targeted Maximum Considered Earthquake 6.3 FOUNDATION DESIGN 6.3.1 General The following recommendations are presented for preliminary design and estimating purposes. These recommendations have been based on typical site materials encountered during our subsurface investigation. Final recommendations should be provided by the project geotechnical consultant following observation and testing of site materials during grading. Depending upon actual site conditions and foundation loads, the recommendations contained herein may require modification. 6.3.2 Soil Expansion The recommendations presented herein are based on soils with a High expansion potential (EI<100 and PI<30). Following site grading, additional testing of site soils should be performed by the project geotechnical consultant to confirm the basis of these recommendations. If site soils with higher expansion potentials are encountered or imported to the site, the recommendations contained herein may require modification. 6.3.3 Settlement Foundations will be subject to static settlement. Mat-type foundations, if used, should be designed to provide stiffness sufficient to limit differential settlement to tolerable limits of the structures. The differential settlement may be based on the recommended modulus of subgrade reaction provided later in this report. The modulus values provided herein are based on loading as discussed in Section 1.3. If actual loading will vary significantly from these assumptions, then revisions to the recommended modulus values may be required. ' ALBUS-KEEFE & ASSOCIATES, INC.