ITEM 618.7 - FLAGGERS
A. SCOPE
This work shall consist of furnishing qualified flaggers, as required to direct traffic through or
around the Work as ordered by the Engineer.
B. MATERIALS AND CONSTRUCTION
The Contractor shall supply qualified flaggers as per the latest approved NHDOT Standard
Specifications for Road and Bridge Construction. Daily coverage needs to be approved by the
Engineer.
C. MEASUREMENT AND PAYMENT
ITEM 618.6 - UNIFORMED OFFICERS
A. SCOPE
This work shall consist of furnishing uniformed officers, with or without vehicles, as required to
direct traffic through or around the Work as ordered by the Engineer.
B. MATERIALS AND CONSTRUCTION
The Contractor shall supply qualified uniformed officers as per the latest approved NHDOT
Standard Specifications for Road Construction. Uniformed officers shall only be used when the
Engineer has previously approved it. Daily coverage needs to be approved by the Engineer.
C. MEASUREMENT AND PAYMENT
C. MEASUREMENT AND PAYMENT
Payment for replacing existing castings shall be at the contract unit price specified for each. All
castings regardless of size will be paid for as one (1) each. The removed castings will remain the
property of the City of Nashua.
Contractor shall record the number and locations of castings replaced for each street. Payment is
contingent upon submittal of quantities in a per structure, and per street format.
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ITEM 604.46 - REPLACE CASTING
A. SCOPE
This work consists of replacing triangular, small diameter, and broken manhole frames and
covers, and catch basin frames and grates as shown on the drawings or as directed by the
Engineer. Any repair needed to the existing structure within the 12 inches below the bottom of
the casting shall be included and performed under this item. Any further repair needed to the
existing structure shall be performed under Item 604.4.
B. MATERIALS AND CONSTRUCTION
ITEM 604.45 - ADJUSTING TO GRADE EXISTING CASTINGS
A. SCOPE
This work consists of adjusting castings to the new final overlay elevation as shown on the
drawings or as directed by the Engineer. Any repair needed to the existing structure within the 12
inches below the bottom of casting shall be included and performed under this item. Any further
repair needed to the existing structure shall be performed and paid under item 604.4 Repair of
Existing Structures.
B. MATERIALS AND CONSTRUCTION
ITEM 604.4 - REPAIR OF EXISTING STRUCTURES
A. SCOPE
This work consists of repairing existing structures below 12” from the bottom of existing casting
frame.
B. MATERIALS AND CONSTRUCTION
The contractor shall include all labor, materials, equipment, and transportation necessary to
repair existing structures other than within the top 12 inches below the bottom of casting frame.
Repairs in that section shall not be paid under this item.
" 8% polyester reinforcing fibers
Preparation and Placement of Sealant
No crack sealant material shall be applied in wet cracks or where frost, snow or ice is present,
nor when the ambient temperature is below 25 degrees F.
* At temperatures ranging from ambient to maximum finished product mix
temperature
** Subject to Normal Variations
The modified asphalt-fiber compound shall be mixed at a rate of 8% fiber weight to weight of
asphalt cement. This compound having the same chemical base provides compatibility and
exhibits excellent bond strengths. The fiber functions to re-distribute high stress and strain
concentrations that are imposed on the sealant by thermal sources, traffic loading, etc.
C. EQUIPMENT
ITEM 405.11 - CRACK SEALING
A. SCOPE
The work covered by this section of the specification consists of furnishing all materials, labor,
transportation, and equipment necessary to perform all operations in connection with the
cleaning and sealing of construction and random cracks in bituminous concrete pavements,
including vegetation removal and sterilization of cracks, where necessary.
B. MATERIAL
