WPC4  
      2      B       P   Z             Courier 10cpi #| x              x 6X   @ 8 X@Canon BJ-200ex (LQ mode)             CB20LQMO.PRS x 
   @   ,hX@Courier 10cpi  2     V   @   Z                   ? x x x h    Aox 6X   @ 8 X@Canon BJ-200ex (LQ mode)             CB20LQMO.PRS x 
   @   ,h  @#| x           2         2                                    Ђ  I. A. 1. a.(1)(a) i) a)                 1 .1  A. 1. a. 1) a)                                                                             X`	hp x (#%'0*,.8135@8:<H?A                    (	xX8xX 8"                     $ SECTION 02223

X% BACKFILLING


PART 1   GENERAL

   ? x 1.01   SECTION INCLUDES

   ?   ((                    A.   Site filling and backfilling.

   ?   ((                   B.   Consolidation and compaction.

   ? (
 1.02  RELATED SECTIONS

   ?   ((   A.  Section 02222 - Excavation.

   ? H  ((   B. H Section 02225 - Trenching: Backfilling of utilitytrenches.(#

   ?  1.03  REFERENCES

   ? 0  ((   A. H ANSI/ASTM C136 - Method for Sieve Analysis of Fine andCoarse Aggregates.(#

   ?   ((   B. H ANSI/ASTM D698 - Test Methods for Moisture-DensityRelations of Soils and Soil-Aggregate Mixtures, Using 5.5lb (2.49 kg) Rammer and 12 inch (304.8 mm) Drop.(#

   ?   ((                   C.  H ANSI/ASTM D1556 - Test Method for Density of Soil in Placeby the Sand-Cone Method.(#

   ?    ((                   D.  H ANSI/ASTM D1557 - Test Methods for Moisture-DensityRelations of Soils and Soil-Aggregate Mixtures Using 10 lb(4.54 kg) Rammer and 18 inch (457 mm) Drop.(#

   ?   1.04   SUBMITTALS

   ?   ((   A.  Submit under provisions of Section 01300.

PART 2   PRODUCTS

   ?   2.01   FILL MATERIALS

   ? `"  ((   A. H Subsoil: Reused, free of gravel larger than 3 inch size,and debris.(#

((  B.  Backfill:  Use sand free of debris.





   h)         0*0*0*  ԌSection 02223  Page 2

PART 3   EXECUTION

   ?   3.01   EXAMINATION

   ?   ((   A.  Verify fill materials to be reused are acceptable.

   ? @ 3.02   PREPARATION

   ?   ((   A. H Generally, compact subgrade to density requirements forsubsequent backfill materials.(#

   ? (
  ((   B. H Cut out soft areas of subgrade not capable of insitucompaction.  Backfill with Type C fill and compact todensity equal to or greater than requirements forsubsequent backfill material.(#

   ?  3.03   BACKFILLING

   ?   ((   A. H Backfill areas to contours and elevations with unfrozenmaterials.(#

   ?   ((   B. H Systematically backfill to allow maximum time for naturalsettlement.  Do not backfill over porous, wet, frozen orspongy subgrade surfaces.(#

   ?   ((   C. H Granular Fill: Place and compact materials in continuouslayers not exceeding 6 inches compacted depth.(#

   ? p  ((   D. H Soil Fill:  Place and compact material in continuouslayers not exceeding 8 inches compacted depth.(#

   ?   ((                   E.  H Employ a placement method that does not disturb or damageutilities in trenches.(#
 ((   
   ?   ((                  F.  H Maintain optimum moisture content of backfill materials toattain required compaction density.(#

   ? x  ((                   G.  H Make grade changes gradual.  Blend slope into level areas.(#

   ?    ((                   H.   Remove surplus backfill materials from site.

   ? ! 3.04   FIELD QUALITY CONTROL

   ? (#  ((   A. H Field inspection and testing will be performed underprovisions of Section 01400.(#

   ? %  ((   B. H Tests and analysis of fill material will be performed inaccordance with ANSI/ASTM D698 and with Section 01400.(#

   ? '  ((   C. H If tests indicate Work does not meet specifiedrequirements, remove Work, replace and retest at no costto Owner.(#   h)        0*0*0*  ԌSection 02223  Page 3

   ?   ((   D.  Frequency of Tests: One per lift per day.

   ?   3.05   PROTECTION OF FINISHED WORK

   ?   ((   A. H Protect finished Work under provisions of Section 01500. (#

   ? @  ((   B.  Recompact fills subjected to vehicular traffic.


# END OF SECTION
