Engineer, the Contractor shall remove the temporary pavement and install or regrade
the sub-base for installation of permanent pavement.
3.04 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. The permanent
pavement patch shall be constructed as detailed on the plans.
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,
curbing, 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.
2. 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:
1. Top course or surface treatment shall be placed over the full width as shown
on the drawings or as specified.
2. 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.
3. Top course or surface treatment pavement placed over trenches may be
feathered to meet existing paved surfaces, if approved by the Engineer.
3.05 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.
2022 Sewer Replacement Project Road Restoration
Nashua, NH 02745-5
