ETL 1110-3-446
20 Aug 92
C-9.
Specifications.
C-9.1. CEGS 02222, Excavation, Filling, and Backfilling for
Utilities Systems.
Satisfactory materials for all but final backfill should
consist of any cohesionless material (i.e., GW, GP, SW, and SP)
as classified by ASTM D 2487, Standard Test Method for
Classification of Soils for Engineering Purposes. Limit all
material to 3 inches or smaller. Unsatisfactory materials should
include all and any material not listed as satisfactory. Select
granular material should consist of only satisfactory material
classified as GW or SW, natural or crushed, or crushed slag.
C--9.2. CEGS 02660, Water Lines.
Incorporate the guidance of this Appendix (i.e., Appendix C)
into the paragraphs relating to Thrust Restraint.
C-12
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