ITEM 608.34 —- 4” REINFORCED CONCRETE SIDEWALK
ITEM 608.36 — 6” REINFORCED CONCRETE SIDEWALK
A.
SCOPE
This work shall consist of constructing four inch (4”) thick reinforced sidewalks, five feet
(5’-0”) wide of Portland cement concrete with synthetic microfibers at a dose rate of 1.5
Ibs. per cubic yard, 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, fibers, 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”) reinforced 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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