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TABLE 1.2 (Continued) <br />1C) Filtration (Cross-Plane Fiowi <br />3. <br />4. <br />5. <br />6. <br />7. <br />8. <br />9 <br />10. <br />11. <br />12. <br />13. <br />14. <br />15. <br />16. <br />17 <br />18. <br />19 <br />20. <br />21. <br />22 <br />23. <br />24. <br />25. <br />26. <br />27. <br />28. <br />29. <br />30. <br />3. <br />4. <br />5. <br />In place of granular soil ^liters <br />Bene^'fh stciic oase ror unpaved roads and airfields <br />Bineath stone base for paved roads and airfields <br />Beneath ballast under railroads <br />A'ound crushed stone surrounding underdrains <br />Around crushed stone without underdrains (i.c.. French drams) <br />Around perforated underdrain pipe <br />Atuiiau stone and perforated pipe in tile fields <br />Beneath landfills that generate leachate <br />To filter hydraulic fills <br />As a silt fence <br />As a sill curtain <br />As ? snow fence <br />As a flexible form to contain sand, grout, or concrete in erosion control systems <br />a flexible form to reconstruct detenorated piles <br />\% a flexible form to restore underground mine integrity <br />.\s a flexible form to restore scoured bridge pier beanng capacity <br />To protect chimney drain material <br />To protect drainage gallery material <br />Between backfill soil and voids in retaining walls <br />Between backfill soil and gabions <br />Around molded cores in fin drains <br />Around molded cores m stnp drains <br />Agamst geognds to prevent soil intrusion <br />Against gcocomposites to prevent soil intrusion <br />.\round sand columns in sand drams <br />Around porous ups for wells <br />.Around porous tips for piezometers <br />.As a filter beneath stone nprap <br />.As a filter beneath precast blocks <br />(d) Drainage (In-Plane Flo^ ) <br />As a chimney drain in an earth dam <br />As a drainage gallery in an earth dam <br />.As a drainage interceptor for honzontaJ flow <br />As a drainage blanket beneath a surc.harge fill <br />As a dram behind a retaining wall <br />6. As a drain beneath railroad ballast <br />7. As a water drain beneath geomembranes <br />8. As an air drain beneath geomembranes <br />9. As a drain beneath sport and athletic fields <br />10. As a drain for roof gardens <br />11. As a pore water dissipator in earth fills <br />12. As a replacement for sand drains <br />13. .As a capillary break in frost-sensitive areas <br />14. As a capillary break for salt migration in arid areas <br />15. To dissipate seepage water from exposed soil or rock surfaces <br />(e) Moisture Barrier (when impregnated} <br />See list of applications under Geomembranes (Section. 1.4).