Laserfiche WebLink
u <br />Table of Contents I <br />1.0 <br />INTRODUCTION........................................................................................................................................1 <br />I.I. <br />Project Description............................................................................................................................1 <br />1.2. <br />Purpose and Scope...........................................................................................................................1 <br />2.0 <br />FIELD EXPLORATIONS AND LABORATORY TESTING........................................................................... 2 <br />' <br />2.1. <br />Field Explorations..............................................................................................................................2 <br />2.2. <br />Laboratory Testing............................................................................................................................2 <br />' <br />3.0 <br />SITE CONDITIONS.................................................................................................................................... 2 <br />3.1. <br />Surface Conditions............................................................................................................................2 <br />3.2. <br />Geology..............................................................................................................................................3 <br />, <br />3.3. <br />Subsurface Conditions......................................................................................................................3 <br />3.3.1. <br />Soil Conditions............................................................................................................................3 <br />' <br />3.3.2. <br />Groundwater Conditions.............................................................................................................4 <br />4.0 <br />CONCLUSIONS AND RECOMMENDATIONS.......................................................................................... 4 <br />, <br />4.1. <br />Earthquake Engineering...................................................................................................................5 <br />4.1.1. <br />Seismicity....................................................................................................................................5 <br />4.1.2. <br />Seismic Hazards.........................................................................................................................5 <br />4.1.3. <br />2015 IBC Seismic Design Information......................................................................................6 <br />4.2. <br />Shallow Foundations.........................................................................................................................6 <br />4.2.1. <br />Allowable Bearing Pressures......................................................................................................6 <br />' <br />4.2.2. <br />Settlement...................................................................................................................................7 <br />4.2.3. <br />Lateral Resistance......................................................................................................................7 <br />4.2.4. <br />Footing Drains.............................................................................................................................8 <br />4.2.5. <br />Construction Considerations......................................................................................................8 <br />4.3. <br />Slab -on -Grade Floors........................................................................................................................8 <br />4.3.1. <br />Subgrade Preparation.................................................................................................................8 <br />' <br />4.3.2. <br />Design Parameters.....................................................................................................................8 <br />4.3.3. <br />Underslab Drainage....................................................................................................................9 <br />4.4. <br />Below -Grade Walls and Retaining Walls..........................................................................................9 <br />4.4.1. <br />Design Parameters.....................................................................................................................9 <br />4.4.2. <br />Wall Drainage...........................................................................................................................10 <br />4.5. <br />Earthwork........................................................................................................................................11 <br />' <br />4.5.1. <br />Excavation Considerations......................................................................................................11 <br />4.5.2. <br />4.5.3. <br />Clearing and Site Preparation.................................................................................................11 <br />Abandoning Utilities.................................................................................................................12 <br />' <br />4.5.4. <br />Earthwork Subgrade Preparation............................................................................................12 <br />4.5.5. <br />4.5.6. <br />Structural Fill............................................................................................................................13 <br />Fill Placement and Compaction Criteria.................................................................................14 <br />, <br />4.5.7. <br />Weather Considerations..........................................................................................................15 <br />4.5.8. <br />4.5.9. <br />Utility Trenches.........................................................................................................................16 <br />Pavement Subgrade Preparation............................................................................................16 <br />4.5.10. <br />Excavations..............................................................................................................................16 <br />GWENGINEERsr.(,� <br />October 30, 2019 Page i <br />File No. 21288 002.00 <br />' <br />