To:
From:
Re:
E. Motion:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: April 28, 2022
Daniel Hudson, P.E., City Engineer
Engineering Department
Paving Program — Asphalt Testing
To approve Change Order No. 4 to the Asphalt Testing contract with S.W. Cole
Engineering, Inc. of Londonderry, NH in the amount of $63,795. Funding will be through:
Department: 160 Admin/Engineering; Fund: Bond; Activity: Paving.
Approximately 17 miles of roadways will be paved this year as part of the annual paving
program, including placement of approximately 42,000 tons of hot mix asphalt. The City
contracts asphalt testing services to verify that all of the technical specification and quality
requirements are being achieved.
We propose to contract with S.W. Cole Engineering, Inc. for full-time plant inspection, field
density testing, concrete inspection, and laboratory analysis. The plant inspection includes
gradation analysis and binder content of the hot mix asphalt to ensure the approved mix
designs are being followed. The field density testing will be utilized on reclaimed roads to
verify that the contractor is achieving the required relative compaction of the base material.
The concrete inspection will confirm that the material delivered for ADA curb ramp work
meets the required specifications. The laboratory analysis will test asphalt for compaction
and concrete for strength.
S.W. Cole Engineering, Inc. has successfully served the City as its asphalt testing firm over
the last several years and has the experience and staff to fulfill the City’s testing needs.
