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TABLE 1.2 MAJOR USES OF GEOTEXTILES <br />(a) Separation of Dissimilar Materials <br />1. Between subgradc and stone base in unpaved roads and ainlelds <br />2. Between subgrade and stone base m paved roads and airilelds <br />3. Between subgrade and ballast in railroads <br />4. Between landfills and stone base courses <br />5. Between foundation and embankment soils for surcharge loads <br />6. Between foundation and embankment soils for roadway fills <br />7. Between foundation and embankment soils for eanh and rock dams <br />8. Between foundation and encaosulated soil la vers• » <br />9. Between foundation soils and rigid retaining walls <br />10. Between foundation soils and fle.xihle retaining walls <br />1 1 . Between foundation soils and storage piles <br />12. Between slopes and downstream stability berms <br />13. Beneath sidewalk slabs <br />14. Beneath curb areas <br />15. Beneath parking lots <br />16. Beneath spon and athletic fields <br />17. Beneath precast blocks and panels for asthctic paving <br />18. Between drainage layers m poorly graded filter blankets <br />19. Between various zones in earth dams <br />20. Between old and new asphalt layers <br />fb) Reinforcement of Weak Soils and Other Materials <br />1 . Over soft soils for unpaved roads <br />2. Over son soils for airfields <br />3. Over soft soils for railroads <br />4. Over soft soils for landfills <br />5. Over soft soils in sport and athletic fields <br />6. Over thermokarst areas <br />7. Over unstable landfills as closure systems <br />8. For lateral containment of railroad ballast <br />9. To wTap soils in encapsulated fabnc systems <br />10. To construct fabric-reinforced walls <br />11. To reinforce embankments <br />12. To aid in construction of steep slopes <br />13. To reinforce earth and rock dams <br />14. To stabilize slopes temporarily <br />15. To halt or diminish creep in soil slopes <br />16. To reinforce jointed flexible pavements <br />17. To bridge over cracked or jointed rock <br />18. To hold graded stone filter mattresses <br />19. As a substrate for articulated concrete blocks <br />20. To stabilize unpaved storage yards and staging areas <br />21. To anchor facing panels in reinforced earth walls <br />22. To anchor concrete blocks in small retaining walls <br />23. To prevent puncture of geomembranes by subsoils <br />24. To prevent puncture of geor>iembranes by landfill matenals or stone base <br />25. To create more stable side slopes due to high frictional resistance <br />26. To contain soft soils in earth dam construction <br />27. For use in membrane-encapsulated soils <br />28. For use tr. m-situ compaction and consolidation of marginal soils <br />29. To bridge over uneven landfills dunng closure of the site <br />30. To aid in bearing capacity of shallow foundations