SUPPLEMENTARY CONDITIONS/PROSECUTION OF WORK
These Supplementary Conditions amend or supplement the Standard General Conditions of the
Construction Contract and other provisions of the Contract Documents as indicated below. All
provisions which are not so amended or supplemented remain in full force and effect.
1.
DESCRIPTION OF WORK
The contract work includes the limits on the various streets listed in the attached
summary. The specified pavement treatment is listed.
The City reserves the right to remove streets from the list, extend or shorten limits on
individual streets, or revise the specified pavement treatment on individual streets.
The City may also add additional streets to the contract work.
Should the net projection of the value of changes to the contract work exceed the
authorized amount, the OWNER will present a contract amendment proposal to
the CONTRACTOR.
CONTRACTOR RESPONSIBILITY FOR GRADING
The CONTRACTOR shall be responsible to assure that the finished pavement surface
will be smooth and will have positive drainage. CONTRACTOR shall be responsible to
assure that puddling will not occur in either the roadway, or on adjacent private property
as a result of CONTRACTOR operations. CONTRACTOR shall perform any
measurements needed in advance of excavation, cold planning, reclamation and paving
activities to assure adequate control needed for grading operations.
The ENGINEER may provide a proposed grading design to the CONTRACTOR for use
in areas to be reclaimed. If a proposed design or other guidance is not provided by the
ENGINEER, the CONTRACTOR shall perform grading of the reclaimed base material
to assure that the preconstruction gutter line is recreated. The ENGINEER may request
the use of grade stakes for grade control. Unless otherwise directed, roadway cross slope
on reclaimed streets shall generally be two percent with a centerline crown. In all cases,
roadway cross slopes on reclaimed streets shall not exceed four percent. Pavement cross
slope transitions shall be consistent with good practice generally accepted by New
Hampshire Department of Transportation.
If in the opinion of the CONTRACTOR, it is not possible to meet these grading
requirements at a particular location due to existing constraints, any such location shall
be identified to the ENGINEER in advance of milling, reclamation and/or paving
activities to allow the ENGINEER reasonable time to investigate and provide guidance
to the CONTRACTOR.
PAVEMENT MIX
NHDOT certified mix designs are required for all pavements.
All pavement mixes shall have a maximum Total Reused Binder (TRB) content of 0.5%
and meet all the volumetric mix design criteria.
Unless specified to be “high strength”, wearing courses shall be 75 gyration with PG 64-
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