Street Construction

Land Development and Subdivision Review Regulations Town of Smithfield, RI

1. Conflicting Specification

   Should any conflict arise between the construction specifications contained herein and the "Standard Specifications for Road and Bridge Construction", published by the State of Rhode Island, Department of Transportation, which is hereinafter cited, the construction specifications contained in these Regulations shall apply.

ARTICLE_B. STREET CONSTRUCTION.

1. Dimensions.

   All streets constructed within a development shall conform to all applicable standards as cited in Section V, Article C of these Regulations.

2. Clearing and Grubbing.

   The entire area of the rights-of-way shown on the approved Final Plan shall be cleared and grubbed. All root systems, trees, stumps, bushes, and other objectionable materials shall be removed and disposed of as indicated by the Municipal Engineer. Healthy trees within the rights-of-way width and outside the pavement width may be left standing, provided said trees are not more than 5' (five feet) from the right- of-way line, except where sidewalks are required.

3. Earth Excavations.

   Earth excavations shall include, but not be limited to, the removal of clay, sand, gravel, loam, soft or disintegrated rock which can be removed without blasting; boulders of less than 1/2 cu. yd. (one-half cubic yard) in volume; and, other unacceptable materials within the limits of roadway, drainage, or other excavation. This item of work shall also include backfilling of all stump holes and other surface irregularities with materials having good drainage characteristics. All excavations shall be to a depth and width as shown on the approved Final Plans, Profiles, and Cross- Sections.

4. Rock and Ledge Excavation.

   Rock and Ledge Excavation shall include removal and disposal of all boulders of 1/2 cu. yd. (one-half cubic yard) or more in volume and all hard ledge rock which can be removed only by drilling and splitting mechanically by hand or blasting Such excavations shall be at least 12" (twelve inches) below sub-grades and, where applicable, ledge side slopes shall be (one foot) horizontal to 1' (one foot) vertical.

5. Subsurface Water.

   Where ground water is encountered within 5' (five feet) of finished grade as determined by RI Department of Environmental Management, "Ground Water Procedures", during the wet season, adequate subsurface drainage shall be constructed to lower the ground water level to a depth of at least 5' (five feet) below finished grade.

6. Description of Street Construction.
   1. General Street. shall be constructed so as to provide a minimum cross-section after compaction of 8" (eight inches) gravel borrow base course sub-base in fill and 10" (ten inches) gravel borrow base course in cuts with 2" (two inches) of crushed bank run gravel (meeting Town specifications) and hot-mix asphaltic and bituminous concrete materials conforming to R.I. Standard Specifications as follows:

      One (1) - 2" (two inches) layer of modified bituminous binder course.

      One (1) - 2" (two inches) layer of bituminous concrete surface course for roadways, Class I, Type I-I.

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