B. The joint sealant shall be a hot poured rubberized emulsified asphalt sealant meeting the
requirements of Federal Specifications SS-S-1401 or SS-S-164.
2.03 TACK COAT:
A. The tack coat shall be an asphalt emulsion, RS-1.
B. The Tack Coat shall be applied to all vertical seams and joints, and between the
bituminous binder and wearing course layers.
C. The surface to which the Tack Coat will be applied shall be prepared as detailed in
the NHDOT, Standard Specifications 410.3.3.2.
D. The Tack Coat shall be applied as detailed in the NHDOT Standard Specifications
410.3.4.2
E. The Tack Coat shall be applied at a rate as detailed in the NHDOT Standard
Specifications 410.3.4.2.1, and as approved by the Engineer.
F, The Tack Coat shall be considered subsidiary to the wearing course of pavement.
PART3 EXECUTION
3.01 GENERAL:
A. _ Paving courses required for the project shall be as shown on the drawings and as specified
herein. Pavement thicknesses specified are measured in compacted inches. If a pavement course
thickness exceeds 2-1/2 compacted inches, the course shall be installed in multiple lifts with each
lift not exceeding 2-1/2 compacted inches in thickness.
3.02 GRAVEL SUBBASE:
A. _ The crushed gravel subbase to be placed under temporary pavement and elsewhere as required
shall consist of the specified thickness of crushed gravel evenly spread and thoroughly
compacted.
B. _ The gravel shall be spread in layers not more than 6-inches thick, compacted measure. All layers
shall be compacted to not less than 95 percent of the maximum dry density of the material as
determined by ASTM D1557 Method C at optimum moisture content.
3.03 TEMPORARY BITUMINOUS PAVEMENT:
A. — Where specified and directed by the Engineer and after placement of the Crushed Gravel sub-
base, the Contractor shall place temporary bituminous pavement above the trench, between the
edges of the existing pavement. It shall consist of a single course of Hot Bituminous Pavement
mix, of the thickness specified on the plans, in accordance with NHDOT Standard Specifications
Section 401.
2019 Sewer Replacement Project Road Restoration
Nashua, NH 02745-4
