Village of Briarcliff Manor
Pocket Park Improvement Project
Contract # VM-0809-4
2.C.
Date: September 15, 2008
GRANITE CURB
2C.1 WORK
Under this item the Contractor shall provide and install Granite Curbing as per the drawings and
specifications, including all labor, materials and equipment necessary or required to do all work
as shown on the drawings and as specified herein, and to the satisfaction of the Engineer. The
unit price bid shall also include the cost of asphalt road repair (See Item 2.B. Asphalt Roadway
Pavement).
2C.2 MATERIALS
Granite Curb
Granite curb shall be NYSDOT Item no. 609.02 Stone Curb Type C. Granite shall be salt and
pepper color, or as indicated on the drawings. The Contractor shall submit granite stone
sample for approval prior to placement of order.
The granite curbs shall be sound and durable, free from seams and of a smooth splitting and
machining character. Natural color variations that are characteristic of the deposit will be
permitted. Any curb containing discoloration other than cleanable surface stains shall be
sampled and submitted to the Engineer for evaluation.
The granite curb shall conform to the shape size and color shown on the contract drawings.
Minimum lengths of straight segments of curb shall have three (3) foot minimum length. Curb
segments on curbs with radii of 100 feet or less shall be shaped to the required curvature and
the ends cut on radial lines. No minimum length requirements are specified for curb segments
on curves with radii of 200 feet or less. Top surfaces shall be sawed or hammered to
approximately true planes with no projection or depression greater than 1/8- inch. Saw marks
normal to the sawing process will be permitted if within the 1/8-inch tolerance.
Top front arris lines shall be eased with no variations greater than 1/8-inch measured from a
2-foot straightedge placed along the arris line. The lower arris line shall be eased with no
variations from a straight line greater than 1/4-inch measured in the same manner. Back
surfaces shall have no projections or depressions, which exceeds a batter of 1-inch in 3-inches,
for a distance of 3-inches from the top. Front exposed faces when split, shall have no projection
or depression greater than 1/2-inch measured from vertical plane passing through the arris line
at the top of the split face. Front faces below grade shall have no projection or depression
greater than 1-inch measured in the same manner.
Ends of curbs shall be approximately square with the planes of the exposed curb surfaces and
shall be finished so that when curbs are set, no space greater than 3/4-inch shall show in the
joints for the full length of the exposed joint.
MZAS Job No: 05.01.03.08
GRANITE CURB
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Village of Briarcliff Manor
Pocket Park Improvement Project
Contract # VM-0809-4
Date: September 15, 2008
Concrete Cradle
The concrete shall consist of Class A Portland Cement, sand, crushed stone, water and
admixture. All of the materials, mix preparations and manufacturing of concrete shall comply
with and shall conform in every respect to the requirements contained in these specifications
and to the requirements set forth for "Rigid Pavement", Section 500 of New York State
Department of Transportation Standard Specifications of January 2, 1990, and any subsequent
addenda, except that no gravel or slag will be used for coarse aggregate.
Concrete shall have a compressive strength of 3,500-psi lbs. per square inch at 28 days and its
slump shall be between two (2") and three (3") inches. The concrete shall be proportioned in
accordance with the aggregate weights specified for Class A concrete in New York State
Department of Transportation Table 501-3.
2C.3 METHOD
The Contractor shall complete all curb construction before installing surface materials.
Excavation shall be made to dimensions sufficient to permit the construction of cradle and
setting of curbstones. The trench shall be open to its full width and depth for a distance of not
less than twenty (20) feet in advance of the setting of the curb.
The material underlying the curb cradle shall be thoroughly compacted. If unsatisfactory, it shall
be removed and replaced with acceptable material, thoroughly compacted.
The cradle shall be composed of stiff concrete, thoroughly tamped in place. The cradle shall be
as shown on the plans. The concrete shall be laid not more than twenty (20) feet in advance of
setting the curb. The portions of the concrete cradle in front and at back of curb shall be placed
and thoroughly compacted as soon as the curb is brought to line and grade and before the
concrete under the curb has set. Joints shall be mortar, not to exceed one half inch (1/2”) in
width. Backfilling shall be done using clean earth or other approved material.
2C.4 MEASUREMENT AND PAYMENT
The quantity of Granite Curb to be paid for under this item shall be the number of linear feet of
curb installed complete. The unit price bid shall include the cost of furnishing of all labor,
materials and equipment, required to provide and install the granite curb and shall include the
cost for asphalt road repair including all sawcutting, excavation and backfill and all materials
complete in accordance with the plans and specifications and to the satisfaction of the Engineer.
MZAS Job No: 05.01.03.08
GRANITE CURB
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