3.05 © PERMANENT BITUMINOUS PAVEMENT:
A. The bituminous paving mixture, equipment, methods of mixing and placing, and the
precautions to be observed as to weather, condition of base, etc., shall be in accordance with
NHDOT Standard Specifications Section 401.
B. BASE COURSE AND BINDER COURSE PAVEMENT:
1.
Immediately prior to installing the base and/or binder course, the trimmed edges shall be
made stable and unyielding, free of loose or broken pieces and all edges shall be
thoroughly broomed clean. Contact surfaces of trench sides, curbings, manholes, catch
basins, or other appurtenant structures in the pavement shall be painted thoroughly
with a uniform coating of asphalt emulsion (tack coat), just before any mixture is placed
against them.
The binder course shall be repaired as necessary to maintain the surface of the
pavement until placement of the permanent overlay. If required, the Contractor shall place
a leveling course before placing the permanent overlay.
C. TOP COURSE OR SURFACE TREATMENT PAVEMENT (PERMANENT OVERLAY):
1.
Top course or surface treatment shall be placed over the full width as shown on the
drawings or as specified.
Prior to placement of the top course or surface treatment, the entire surface over
which the top course or surface treatment is to be placed shall be broom cleaned and tack
coated.
Top course or surface treatment pavement placed over trenches may be feathered to meet
existing paved surfaces, if approved by the Engineer.
Prior to placing full width top course or surface treatment pavements, keyways shall be cut
in all intersecting streets.
3.06 PAVEMENT PLACEMENT:
A. Unless otherwise permitted by the Engineer for particular conditions, only machine
methods of placing the pavement shall be used. The equipment for spreading and finishing shall
be mechanical, self-powered pavers, capable of spreading and finishing the mixture true to line,
grade, width and crown. The mixtures shall be placed and compacted only at such times as to
permit proper inspection and checking by the Engineer.
B. After the paving mixtures have been properly spread, initial and intermediate compaction shall
be obtained by the use of steel wheel rollers having a weight of not less than 240 pounds per
inch width of tread.
2019 Sewer Replacement Project Road Restoration
Nashua, NH 02745-6
