ARTICLE IGeneral Provisions (§ A90-1 — § A90-10)
ARTICLE IISpecifications (§ A90-11 — § A90-18)
§ A90-1Statutory authority; conformity
§ A90-2Inspection; performance bond.
§ A90-4Information required prior to
§ A90-5Grades, drainage systems, curb
§ A90-6Control points; construction
§ A90-7Utilities; street openings after
§ A90-8Interpretation of specifications.
§ A90-9Owner to indemnify Village for
injuries and damages.
§ A90-10Compliance with State Sanitary
Code provisions; insurance.
Pursuant to the Village Law, any residential development street to be constructed within the Incorporated Village of the Branch, Town of Smithtown, County of Suffolk, New York, shall conform to these specifications and details.
All such work shall be subject to inspection and approval by a competent and authorized representative of the Village, and the owner shall furnish to the Village a performance bond sufficient to cover the full cost of the work as estimated by the Planning Board or other appropriate Village department.
It is the intent of these specifications to secure safe, comfortable and permanent streets having properly engineered grades and alignments with stable foundations, adequate drainage and reasonably permanent surfaces, constructed in accordance with the best standard material and modern practices for such work.
Prior to construction, the owner shall be required to furnish to the Village for approval details of the grade, alignment and drainage system for the street proposed, together with such cross sections and adjacent topographic data as may be required for satisfactory interpretation of conditions existing, together with sieve and content analysis of the existing soil sufficient to determine its use in conformity with these specifications, and of the composition of aggregates of the courses of pavement during construction.
Grades shall be designed for highway comfort and safety rather than merely to fit the existing contour of the land. Drainage systems shall be designed to provide efficiently not only for adequate and rapid street drainage, but also to prevent the collection of water on adjacent land. All intersecting streets shall have a curb radius of not less than 25 feet.
The owner shall establish and maintain in the field proper control points for the grade and alignment during construction. All construction shall be engineered by experienced personnel and shall conform to the design as approved. The owner will be held responsible for the accuracy of the work.
The owner shall be required to coordinate the street construction with the various utilities; no street openings will be permitted after completion of the final street surface, except under proper and official permit therefor by the Village.
In order to preclude any need for controversial arbitration during construction concerning interpretation of these specifications, the owner is required to satisfy himself therein by proper negotiation with the Village prior to any construction work.
The owner shall at all times comply with any legalities concerning the work and shall indemnify and save harmless the Village and its officers and agents from all suits, actions or claims of any kind, character, name and description brought for or on account of any injuries or damages received or sustained by any person, persons or property or by or in consequence of any neglect in safeguarding the work.
The owner shall comply with the provisions of the State Sanitary Code during construction work and shall procure and maintain all insurance as may be necessary, including workmen's compensation and liability insurance.
§ A90-11General specifications.
§ A90-12Excavation and fill.
§ A90-13Stabilized earth subbase.
§ A90-14Bituminous stabilized base course.
§ A90-15Bituminous concrete top course.
§ A90-16Cement concrete curbing and sidewalks.
§ A90-17Drainage structures and pipe.
Street construction under these specifications shall be a bituminous concrete surface course, a bituminous stabilized soil base course and a stabilized soil subbase, with portland cement concrete sidewalks and curbing on both sides throughout, all as shown on the detail drawings of these specifications.
The entire area within the street lines, whether in cut or fill, shall be cleared. All humus, bog, clay, roots, vegetable matter, debris or other objectionable material shall be excavated and removed from the street site.
Any excavated soil material meeting the specification requirements for subbase and base courses may be incorporated into the street construction.
Any embankment that may be required to bring the street up to subgrade elevation shall be composed of clean sand-gravel material in which the silt-clay content, if any, shall not exceed the specification for subbase content, and shall be constructed in successive six-inch layers extending the full width of the street, each separate layer being independently compacted by rolling or by means of other mechanical devices sufficiently to provide a uniform density and compaction that will preclude settlement. Particular care shall be taken to thoroughly compact with mechanical tampers all soil fill around and under pipe and drainage structures.
The subbase shall be the top six inches of the excavated and embanked sections of the street, accurately shaped to the street line and grade as designed, and constructed to the elevation of the bottom of the base course proper. All cuts and fills shall be so constructed that where amendatory soils are added and compacted as specified herein, the above-mentioned elevation will be obtained.
The subbase shall consist of clean, hard sand and gravel aggregate with silt-clay binder, uniformly proportioned in its natural state or artificially mixed to meet reasonably the following composition limits by weight:
|Sieve Designation||Percentage of Total Weight Grading A|
|1 1/2 inch||70-100|
|No. 4 sieve||30-60|
|No. 10 sieve||20-50|
|No. 40 sieve||10-30|
|No. 100 sieve||7-18|
|No. 200 sieve||5-15|
The amount of the fraction passing the No. 200 mesh sieve shall not be greater than 1/2 of the fraction passing the No. 40 sieve. The fraction passing the No. 40 sieve shall have a liquid limit not greater than 25 and a plasticity index not greater than six as determined by the A.A.S.H.O. Methods T-89 and T-91.
The composition of the mixture specified may be obtained by direct manipulation of the soils in place by the addition of amendatory soils as necessary, uniformly incorporated to the six-inch depth by means of plowing, blading, rototilling or disking. When the materials have been thoroughly and uniformly mixed throughout, water, if and as necessary, shall be evenly distributed thereover until optimum moisture content is obtained in a homogeneous mass of uniform color. The material shall then be shaped to proper line, grade, section and depth and compacted to final shape by use of tamping rollers or other satisfactory compacting equipment. The method of compaction shall be such as to consolidate the mixture to the full six-inch depth of the subbase for the full width of the street right-of-way. The subbase, when completed, shall have a minimum dry density of 95% of the maximum dry weight density in pounds per cubic foot as determined by the A.A.S.H.O. Designation T-99, Standard Method of Test for the Compaction & Density of Soil.
Any part of the subbase that becomes muddy, soft or yielding prior to placement of the base course shall be removed and replaced with proper subbase material before proceeding with any base construction. Any depressions, bumps, ruts or inequalities that develop during compaction shall be corrected before placement of the base course.
Base material shall consist of bituminous-treated clean, hard, local sand and gravel aggregate with clay-silt filler, uniformly graded in the following proportions:
|Sieve Designation||Percent Passing|
|1 1/2-inch-square opening||100|
|No. 4 sieve||45-65|
|No. 10 sieve||35-55|
|No. 40 sieve||20-35|
|No. 200 sieve||5-15|
The aggregates to be used in the finished stabilized base course mixture shall be tested over United States standard sieves. A sample of the coarse and fine aggregates shall be washed to determine the percentage of the total material passing the No. 200 mesh sieve. Of the amount of the material passing the No. 200 mesh sieve, at least 1/2 shall pass No. 200 mesh sieve by dry sieving.
The bituminous material shall be rapid-curing cutback asphalt, Grade RC-3, conforming to current New York State Public Works' specifications therefor, and it shall constitute between 5% and 7% of the total dry weight of the aggregate. It shall be uniformly heated to a temperature range of 150° F. to 200° F., and the mixing shall be such as to coat all the aggregate particles to obtain a homogeneous mixture. Hydrated lime in the amount of 1/2% to 1% of the total aggregate weight shall be introduced into the mixture immediately after the bituminous material. If particle adhesion is poor, a suitable approved wetting agent or additive may be combined as necessary with the bituminous material during the heating process, but the amount used shall not exceed 1% by weight of the weight of the bituminous material. The owner will be required to furnish the Village with satisfactory test reports of the bituminous material being used during construction work.
The base material shall be mixed in a continuous or batch-type pug mill, which shall be so designed as to accurately proportion either by volume or weight and shall be equipped with a dryer or other suitable device for controlling the moisture content of the material aggregate, which shall not exceed 3% when entering the mixer.
The aggregates for the mixture shall be blended before entering the mixture, and if drying of the aggregate is necessary, the aggregate shall not enter the mixer at a temperature in excess of the temperature of the bituminous material.
Base course operations shall be performed only when the surface on which material is to be placed is dry, and in fair weather of 50° F. or above.
The base shall be placed by approved spreading machines in two layers of 2 1/2 inches in compacted thickness for each layer, and the final surface shall conform as exactly as possible to the final designed line, grade and shape preparatory to placement of the one-inch finishing top course. Any variations of the surface from the designed grade and shape or any unreasonable roughness or inequality in the surface shall be corrected before placement of the top course.
Placement of the base material shall proceed from the center toward the edges; rolling shall be longitudinal and shall proceed from the edges toward the center. All work shall be organized so that the full width of the pavement can be completed the same day the material is placed and so that no traffic is permitted to run over it until it has been thoroughly compacted and set.
Each of the layers shall be spread and compacted similarly, and the surface of the preceding layer shall be thoroughly cleaned before the next layer is spread.
The specifications for the base course shall apply also for the top course except as herein modified.
The aggregates for the top course shall be uniformly graded in the following proportions:
The bituminous material shall be the same rapid-curing cutback asphalt, Grade RC-3, but it shall constitute between 4% and 7% of the total dry weight of the aggregate.
Particular care shall be exercised in joining completed sections of the pavement for appearance and smooth riding and in compacting the material adjacent to curbing, both for efficient compaction and for protection of the curb against damage.
Sidewalks and curbing shall be constructed in accordance with the details of these specifications on both sides of the street, with sufficient driveway openings to provide for all anticipated housing.
Concrete shall be approved, clean, hard, local sand and gravel aggregate, uniformly proportioned in batches of 550 pounds of portland cement, 1,100 pounds of sand and 2,200 pounds of gravel.
The foundation for sidewalks and curbing shall be of subbase material built in conjunction with subbase construction and shall be absolutely compacted and unyielding.
Both sidewalks and curbing shall be built with matching edged construction joints at ten-foot intervals with 1/2-inch premolded expansion joints, edged, at forty-foot intervals; and the sidewalks shall have additional transverse edging at five-foot intervals. Curbing and sidewalks adjacent to each other or to other structures shall also have an edged, 1/2-inch premolded expansion joint.
All sidewalks and curbing shall be constructed uniformly with the street pavement line, grade and shape; all exposed concrete surfaces shall be properly cured and rubbed to a fine wood-float finish.
Drainage structures and pipe shall be constructed as shown for the approved street design and in accordance with the details of these specifications.
Concrete for structures shall be similar to the concrete for sidewalks and curbing. Building blocks may be local gravel or cinder concrete blocks, but subject to approval before being used. Mortar used in the masonry work shall be composed of one part cement and two parts mortar sand: mortar joints shall be 3/8 inch. Masonry units shall be laid true to line with satisfactory bond.
Particular care shall be exercised to ensure a thoroughly compacted and stable foundation under drainage structure footings so as to prevent any settlement.
Corrugated metal pipe shall be of first quality, straight, of true circular form, galvanized and bituminous-coated, and shall meet all the requirements of Standard Specifications for Corrugated Metal Culvert Pipe. A.A.S.H.O. Designation M36. Connections for making field joints shall consist of corrugated bands so constructed as to secure a firm connecting lap on equal portions of the pipe. The ends of pipe culvert outlets shall have a connecting band placed flush on the end.
Iron castings shall be Flockhart Code No. 29385 or equal, conforming to Standard Specifications for Gray Iron Castings, A.S.T.M. Designation A48, Class 20.
Bar reinforcement shall be free from rust or mill scale and shall meet the requirements for A.S.T.M. Designation A15, intermediate grade.
Topsoil of a quality proper for growing lawn grass shall be placed adjacent to the sidewalk and curbing as indicated on the detail drawings of these specifications, and it shall be in such condition as to be ready for seeding.