Technical Specifications — 2021 Paving Program Arterial and Collector Roadways
Leaching Catch Basin Detail
SINGLE GRATE - 24° x 24° OPENING
DOUBLE GRATE - 24" « 40" OPENING
TOP SLAB [H-20 LOADING)
SS
12"
THIN
PSS re FILTER FABRIC
L SSS (IRAP 1406 OF
APPROVED EQUAL)
CRUSHED STONE (COURSE)
NHOOT ITEM 04.6
PERFORATION (TYP)
10% BOTH WAYS
a:
'. (PERPORATED °
4 “
md
—
PERFORATION
NOT TO SCALE
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TW]
ITEM 604.124 —- CATCH BASIN
A. SCOPE
This work includes furnishing and installing a catch basin at locations shown on the plans or as
directed by the Engineer.
B. MATERIALS AND CONSTRUCTION
The contractor shall furnish all materials, labor, equipment, and transportation necessary to
complete the work in accordance with the latest approved City of Nashua Standard
Specifications for Road Construction, or the latest approved NHDOT Standard Specifications for
ITEM 603.82212 — 12” POLYETHYLENE PIPE (TYPE S)
A.
SCOPE
This work shall consist of furnishing and installing polyethylene (PE) pipe type S, at the
locations shown on the plans or as ordered by the Engineer.
MATERIALS AND CONSTRUCTION
C. MEASUREMENT AND PAYMENT
The accepted quantities of Cold Planing Transitions will be paid for by the Square Yard
measured in the field and approved by the Engineer. Contractor shall record the square yards of
cold planed transitions for each street. Payment is contingent upon submittal of quantities in a
per street format. This payment shall also include all materials, labor, equipment, and all else
needed to complete the work under this item.
Page 13 of 43
ITEM 417.20- COLD PLANING TRANSITIONS
A. SCOPE
This work shall consist of the removal of existing bituminous pavement the depth and limits
shown on the plans or as directed by the Engineer. Cold planning transitions are required to tie in
overlays with existing pavement.
For roadways which are being reclaimed this item shall only be used to pay for cold planing at
driveway tie-ins as directed by the Engineer.
C. MEASUREMENT AND PAYMENT
This item shall be measured by the Square Yard of Cold Planing of Bituminous Surfaces.
Payment for this item shall be at the contract unit price per Square Yard. This payment shall also
include all materials, labor, equipment, and all else needed to complete the work under this item.
Contractor shall record the square yards of cold planed area for each street. Payment is
contingent upon submittal of quantities in a per street format.
ITEM 417 - COLD PLANING OF BITUMINOUS SURFACES
A. SCOPE
This work shall consist of the removal of existing bituminous pavement between road edges, to
the depth shown on the plans or as ordered by the Engineer. Maximum depth will vary from 2.0”
to 3.5”, depending upon the specific street treatment.
B. MATERIALS AND CONSTRUCTION
ITEM 403.6 -PAVEMENT JOINT ADHESIVE
A. SCOPE
This work includes the installation of pavement joint adhesive in locations as specified herein,
shown on the plans or as directed by the Engineer.
B. MATERIALS AND CONSTRUCTION
ITEM 403.12 -HOT BITUMINOUS PAVEMENT, HAND METHOD
A. SCOPE
This work shall include paving using the hand method for driveways, curb patches, areas
between railroad crossings, areas where it is impractical to pave using machine method, as
shown on the plans, or as ordered by the Engineer. Hand method paving shall not be used where
machine method paving is required.
B. MATERIALS AND CONSTRUCTION
Minimum Binder Content to be 6.0% for 3/8” mix designs; 5.5% for %” mix designs; and 4.6%
for %4” mix designs. All pavement mixes shall have a maximum Total Reused Binder (TRB)
content of 0.5% and meet all the volumetric mix design criteria.
Hot Bituminous Pavement to be placed under NHDOT Section 401 “Method Requirements” (not
“QC/QA”).
Specific pavement mix and thickness for this contract shall be as specified in the Supplementary
Conditions or directed by the Engineer.
Testing:
