ITEM 608.24 —- 4” CONCRETE SIDEWALK
ITEM 608.36 — 6” REINFORCED CONCRETE SIDEWALK
A.
SCOPE
This work shall consist of constructing four inch (4”) thick sidewalks, five feet (5’-0”)
wide of Portland cement concrete, or six inch (6”) thick curb landings of reinforced
concrete with 6 x 6 — W 2.9 x W 2.9 Steel mesh as shown on the plans or as ordered by
the Engineer. Work includes but is not limited to furnishing, placing, finishing, curing,
stripping, coating and cleanup work associated with the installation of the sidewalk or
walkway. Existing subgrade materials will be evaluated to be reused or will need to be
excavated and replaced with 6” of compacted crushed gravel. The sidewalk shall have a
maximum cross slope of 2%, reinforced (if required) and graded to properly drain. The
curb ramps shall have a maximum cross slope of 2% and maximum running slope of
8.33% but shall not require the ramp length to exceed 15’ if chasing grade. If the road
grade is greater than 2% the ramp or edge of a flush landing may be warped to meet the
street running grade. Curb ramps require a level (2% or less slope in any direction) 5’x5’
reinforced 6” thick landing wherever a turning maneuver is required. All curb ramps shall
be installed with a flush transition to the road surface.
MATERIALS AND CONSTRUCTION
The Contractor shall furnish all materials, labor and equipment necessary for constructing
concrete sidewalk or walkway in accordance with relevant provisions of Section 608 and
Section 520 of the NHDOT Standard Specifications for Road and Bridge Construction,
latest edition. Reinforcement and coating shall be subsidiary. Removal of existing
sidewalk and curbing, earth excavation and crushed gravel subgrade shall be subsidiary.
Transportation and disposal of the removed material shall be the responsibility of the
Contractor. Detectable Warning shall be installed at all curb ramps.
MEASUREMENT AND PAYMENT
Four-inch (4”) concrete sidewalk will be paid for at the contract price per square yard,
complete in place. The area occupied by the curb will not be included in the final pay
quantity. Six-inch (6”) reinforced concrete landings will be paid for at the contract unit
price per square yard, complete in place. Both Items shall include full compensation for
material, equipment and labor to complete this portion of the Bid Schedule. Relocation
of existing small plants and bushes shall be incidental to this item.
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