C. Final rolling of the top course or surface treatment pavement shall be performed by a
steel wheel roller weighing not less than 285 pounds per inch width of tread at a mix
temperature and time sufficient to allow for final smoothing of the surface and
thorough compaction.
D. Immediately after placement of top course or surface treatment pavement, all joints
between the existing and new top course or surface treatment pavements shall be
sealed with hot poured rubberized asphalt sealant meeting the requirements of
Federal Specification SS-S-1401 or SS-S-164.
E. When directed by the Engineer, the Contractor shall furnish and install additional
paving to provide satisfactory transition for driveways and walkways impacted by a
new curb-to-curb pavement installation. The transition installation will be
considered incidental to the curb-to-curb pavement installation.
3.06 RAISING AND ADJUSTING CASTINGS:
A. In areas of permanent top course paving, existing municipally-owned catch basin
and manhole castings and valve boxes shall be raised to the proper grade where
directed by the Engineer.
B. Castings owned by private utilities shall be raised by their own forces. The
Contractor shall be responsible for coordinating this work.
C. The method of adjusting these castings shall be as follows: Cut around catch basin
or manhole castings a minimum of 8-inches from casting. Excavate and if required
rebuild up to 18-inches of masonry below the bottom of the casting. Backfill with
suitable material and compact to bottom of casting. Place high, early strength
cement or bituminous concrete collar, as directed, to approximately 1 1/2-inches
below the raised casting grade. Masonry work shall conform to Section 02631,
PRECAST MANHOLES.
D. In some areas, raising of castings may not be required. Where directed by the
Engineer, castings not to be raised shall have at least 12-inches of bituminous
concrete pavement chipped and removed around the casting. New bituminous
concrete pavement shall be placed and compacted around such castings to
approximately 1-1/2-inches below the top of the casting. The overlay course shall
then be sloped down to the level of the casting.
E. The method of raising valve boxes shall be as follows: Cut around valve box a
minimum of 8-inches from valve box. Excavate as required and raise the valve box.
Pour high early strength cement or bituminous concrete collar, as directed, to
approximately 1-1/2-inches below the top of the valve box.
F. Castings which need to be raised or adjusted to complete permanent curb to curb
paving shall be done immediately prior to paving.
2022 Sewer Replacement Project Road Restoration
Nashua, NH 02745-6
