REINFORCED BACKFILL PLACEMENT
Wall fill material shall be placed in lifts no greater than 8” in depth and shall be less if necessary to achieve necessary compaction.
Compact backfill material to 95% of standard proctor.
Only hand-operated compaction equipment shall be used within 3 feet of the back of the ReCon Units.
Wherever possible, backfill should be placed beginning the face of the wall. Backfill shall be placed, spread, and compacted in a manner that minimizes the development of wrinkles, folds or movement of the geogrid.
Tracked construction equipment shall not be operated directly on the geogrid. A minimum backfill thickness of 6 inches is required prior to operation of tracked vehicles over the geogrid. Turning of tracked vehicles should be kept to a minimum to prevent tracks from displacing the fill and damaging the geogrid.
Rubber tired equipment may pass over the geogrid reinforcement at slow speeds, (less than 10 MPH). Avoid sudden braking and sharp turning.
At the conclusion of each days work, slope backfill at both the crest and bottom of wall away from wall face to prevent surface drainage from scouring or ponding.
During wall construction, the General Contractor shall be responsible for coordination of other project site operations so as to avoid adjacent construction site drainage from affecting wall construction area.
Upon completion of wall construction work, the General Contractor shall:
Ensure finished grading directs normal drainage away from the finished wall.
Ensure other trades do not operate heavy equipment or excavate near the wall and reinforced soil zone.
CAP UNIT INSTALLATION
Clean and apply exterior concrete cap adhesive to top course of ReCon wall unit prior to placement of ReCon cap unit.
Trim sides of interior cap units to insure proper fit of wall cap. Do not leave cut surfaces exposed to view in the finished wall.
Fill and compact soil to top of ReCon cap unit.
Vertical alignment: +/- 1.5” over any 12 ft. distance and no more than +/- 3” over entire length of wall.
Horizontal Alignment Control:
Corners and radius location: +/- 1 foot to theoretical location indicated on the Grading Plan.
Radii: +/- 2 ft. from theoretical lines indicated on the Grading Plan
Wall Batter At Completion Of Work: +/- 2 degrees from the design batter and no batter less than 2 degrees.
FIELD QUALITY CONTROL
Contractor shall be responsible for proper installation and quality control of all ReCon wall components and appurtenant materials.
Owner shall, at their expense, retain a qualified professional to monitor and perform quality assurance checks of the installer's work.
Quality Assurance should include foundation soil inspection, frequent backfill compaction testing, verification of geotechnical design parameters and compliance with Construction Drawings and Project Specifications.
After completion of wall installation, remove construction debris and restore any adjacent finished areas affected by wall construction to their pre-construction state.
Wash wall face to remove soiling and stains. Do not use acid or detergents that may “burn” or discolor face.
STAINING / SEALING (Optional)
Provide samples of stained / sealed faces for approval prior to commencing application to ReCon retaining wall units. Samples shall be large enough to demonstrate scope of color variation.
Install stain / sealer in accordance with manufacturers recommended procedures.