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TranSystems Corporation - LGM Construction

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7.0 DISCUSSIONS AND CONCLUSIONS<br />

Based on our review of the field exploration, laboratory data collected to date, and<br />

engineering analyses, we believe that the project as currently proposed is feasible from<br />

a geotechnical standpoint, provided that the recommendations presented in this report<br />

are incorporated into the design. The discussions and conclusions that follow are<br />

based on design information provided by the project Structural Engineer (<strong>TranSystems</strong>),<br />

the results of our field investigations, our engineering analyses, and our professional<br />

judgment. Recommendations regarding site grading and foundation design are<br />

presented in the “Recommendations” section of this report.<br />

7.1 FOUNDATION TYPE<br />

Beneath the existing asphalt concrete pavement section, the site is underlain by<br />

medium dense clayey gravel fill. Based on the relatively light loads of the proposed<br />

structure, we believe the building can be supported on a shallow spread footing<br />

foundation. However, because of the potential of 2.5 inches of liquefaction derived<br />

settlement (see Section 6.3), we judge a shallow mat foundation would be able to span<br />

the anticipated differential settlement.<br />

We anticipate total and differential static settlements due to foundation pressures for a<br />

mat foundation to be less than ½ inch and ¼ inch over a horizontal distance of about<br />

100 feet, respectively, provided that the design recommendations contained in the<br />

“Recommendations” section of this report are followed. Foundation settlements should<br />

be primarily elastic in nature, with a majority of the estimated settlement occurring upon<br />

the application of the load during the construction.<br />

In addition to the elastic settlements, maximum liquefaction-induced settlement of up to<br />

2.5 inches is likely to occur at the site during a seismic event as discussed in the<br />

“Seismic Hazards” section of this report.<br />

94240/1(OAK8R061)/es Page 15 of 29 June 13, 2008<br />

© 2008 Kleinfelder

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