and spread fill material within 1000 mm of any geotechnical instrument, instrument lead, or other instrument component by hand and compact to the same density as the adjacent fill with pneumatic or mechanical hand tamping equipment. Compact select backfill in 100 mm thick lifts to a minimum of 95% of its Standard Proctor Maximum Dry density at a moisture content within a range of 1% under to 2% over optimum as determined in accordance with ASTM D698. Do not permit compaction equipment to come into direct contact with the instrument or instrument components. Do not concentrated, repetitive, vehicle or equipment traffic over instruments or instrument components until the compacted backfill reaches a minimum of 1500 mm above the instruments or instrument components. Place fill material within 1000 mm of any geotechnical instrument, lead, or other instrument components ahead of the placement of surrounding fill material such that the level of the fill material within 1000 mm of the instrument component remains a minimum of 300 mm above the surrounding fill material. Cap and protect the free ends of all instrument leads. Drill holes and install instruments and bury leads in the embankment foundation prior to fill placement in these areas. Install pneumatic piezometers in the embankment fill upon completion of fill placement in these areas. Extend the inclinometer casing and lead riser duct so that the top of the casing or lead riser duct remains a minimum of 500 mm above the level of the surrounding fill. holes and install the inclinometer casing and Casagrande piezometers ahead of fill placement in these areas. Drill holes and install each inclinometer casing and Casagrande piezometer upon completion of excavation at each instrument location. Where no excavation is required at the inclinometer or piezometer location, schedule its drilling and installation prior to the commencement of excavation in the area. Install the surface monuments immediately upon completion of fill placement in these areas. Sequence and construct the instrument building as specified in the Contract Documents concurrently with the installation of instruments. [ ]. PIEZOMETERS General: Complete all excavations in the vicinity of the pneumatic piezometer locations prior to installation. Keep pneumatic piezometer tips saturated during calibration and installation.
and spread fill material within 1000 mm of any geotechnical instrument, instrument lead, or other instrument component by hand and compact to the same density as the adjacent fill with pneumatic or mechanical hand tamping equipment. Compact select backfill in 100 mm thick lifts to a minimum of 95% of its Standard Proctor Maximum Dry density at a moisture content within a range of 1% under to 2% over optimum as determined in accordance with ASTM D698. Do not permit compaction equipment to come into direct contact with the instrument or instrument components. Do not concentrated, repetitive, vehicle or equipment traffic over instruments or instrument components until the compacted backfill reaches a minimum of 1500 mm above the instruments or instrument components. Place fill material within 1000 mm of any geotechnical instrument, lead, or other instrument components ahead of the placement of surrounding fill material such that the level of the fill material within 1000 mm of the instrument component remains a minimum of 300 mm above the surrounding fill material. Cap and protect the free ends of all instrument leads. Drill holes and install instruments and bury leads in the embankment foundation prior to fill placement in these areas. Install pneumatic piezometers in the embankment fill upon completion of fill placement in these areas. Extend the inclinometer casing and lead riser duct so that the top of the casing or lead riser duct remains a minimum of 500 mm above the level of the surrounding fill. holes and install the inclinometer casing and Casagrande piezometers ahead of fill placement in these areas. Drill holes and install each inclinometer casing and Casagrande piezometer upon completion of excavation at each instrument location. Where no excavation is required at the inclinometer or piezometer location, schedule its drilling and installation prior to the commencement of excavation in the area. Install the surface monuments immediately upon completion of fill placement in these areas. Sequence and construct the instrument building as specified in the Contract Documents concurrently with the installation of instruments. [ ]. General: Complete all excavations in the vicinity of the pneumatic piezometer locations prior to installation. Keep pneumatic piezometer tips saturated during calibration and installation. PIEZOMETERS
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