B. The temporary pavement shall be repaired as necessary to maintain the surface of the
pavement until replaced by permanent pavement.
3.04 RECLAIMED STABILIZED BASE:
A. Reclaimed stabilized base shall consist of pulverizing the existing pavement together with
subbase material to the depth specified on the plans, removal and disposal of
excess reclaim material at the City landfill, fine grading to assure that finished surface
matches existing gutter or as directed by the Engineer, and compaction of materials
to required densities. The material removed from this operation shall remain the
property of the City of Nashua and shall be transported and stock piled by the
contractor at the Four Hills Landfill at 830 West Hollis St in Nashua.
B. Compaction shall be accomplished using a vibratory sheep's foot roller or pad foot
roller with at least 50,000 Ibs. of dynamic force. Final rolling shall be
accomplished by a smooth steel wheel vibratory roller with at least 27,000 lbs. of
dynamic force. Contractor shall also provide compaction equipment sufficient to
achieve required densities in areas not accessible by larger equipment.
C. Fine grading to proposed grades shallbe subsidiary. Removal, transportation, and
disposal of approximately 4" of material are subsidiary. After the roadway has been
fine graded and compacted, the Contractor will allow 1 working day for the city to
review compacted base. In no case shall paving be scheduled prior to acceptance of
base proposed grades.
D. All catch basins must be protected from reclaimed materials by use of silt sacks.
All materials, labor, equipment, and transportation necessary to install, maintain,
and remove the silt sacks shall be subsidiary, including disposal of material.
E. The Contractor shall be responsible to assure that the finished pavement surface
will be smooth and will have positive drainage. Contractor shall be responsible to
assure that puddling will not occur in either the roadway, nor on adjacent private
property as a result of Contractor operations. Contractor shall perform any
measurements needed in advance of excavation, cold planing or reclamation
activities to assure adequate control needed for grading operations.
F. ‘The Engineer may provide a proposed grading design to the Contractor for use in
areas to be reclaimed. Ifa proposed design or other guidance is not provided by the
Engineer, the Contractor shall perform grading of the reclaimed base material to
assure that the preconstruction gutter line is recreated. Unless otherwise directed,
roadway cross slope on reclaimed streets shall generally be two percent with a
centerline crown. In all cases roadway cross slopes on reclaimed streets shall not
exceed four percent. Pavement cross slope transitions shall be consistent with good
practice generally accepted by New Hampshire Department of Transportation. If in
the opinion of the Contractor it is not possible to meet these grading requirements at a
particular location due to existing constraints, any such location shall be identified
to the Engineer in advance of scheduled activities to allow the Engineer reasonable
time to investigate and provide guidance to the Contractor.
2019 Sewer Replacement Project Road Restoration
Nashua, NH 02745-5
