§ 143-18. Roadway construction.

A. 

General. Roadway construction materials which meet the State of New York's Department of Transportation Specifications shall generally be approved for construction. Other materials may be approved by the Town to be used instead of items from the Department of Transportation Specifications. All roadway construction shall be controlled by stakes for grade and alignment.

B. 

Subgrade preparation.

(1) 

All trees, brush, topsoil, stumps, roots more than 1/2 inch in diameter and rubbish shall be removed from the area of the roadway. Boulders shall be removed to a depth of one foot below the subgrade surface.

(2) 

Muck, spongy material or other unsuitable material shall be completely removed and the excavation filled with suitable material.

(3) 

The subgrade shall be compacted to 95% Standard Proctor (ASTM D698). The final compacted surface shall not be more than one-half (1/2) inch higher than design subgrade in any location and shall be generally the same cross-sectional shape as the final design grade. It shall also be proof-rolled where required to determine if underdrain filters may be required.

C. 

Embankment.

(1) 

No organic material, frozen material or other unsuitable material shall be used in embankments. The compacted embankment shall have a minimum dry density of 95% of the maximum density. The maximum density shall mean the maximum dry weight density as determined by the AASHO Designation T-99, Method C.

(2) 

The slopes of all embankments which slope steeper than one on five shall be stabilized by spreading and rolling topsoil and seeding to obtain a satisfactory stand of grass.

(3) 

Embankments shall be placed and rolled in layers of maximum eight-inch depth, measured before compaction. The embankment subgrade shall be prepared as required under Subsection B, Subgrade preparation, above.

D. 

Base construction. Materials and construction methods for pavement base course shall conform to Section 304 of the New York State Department of Transportation Specifications, January 1978.

E. 

(Reserved)

Editor's Note: Former Subsection E, surface construction, as amended 5-25-1989, was repealed 12-5-2011 by L.L. No. 12-2011. See now Ch. 139, Art. V.

F. 

Curbs. Curbs shall be hot-mix machine-laid bituminous concrete as shown on the typical Town road cross section.

[Amended 5-1-1995 by L.L. No. 2-1995]

G. 

Underdrains. Materials and construction methods for underdrain filters shall conform to the requirements of Section 605, Underdrain, New York State Department of Transportation Specifications. Pipe used shall be perforated ADS or approved equal.