DPW Paving Spec. local section.doc

REQUIREMENTS AND STANDARDS FOR THE RESTORATION OF ROADS

The current New Jersey State Department of Transportation Standard Specifications for the Road and Bridge Construction, as added to or amended herein, shall govern all work.

III. EXCAVATION AND BACKFILLING A. PAVEMENT PRE-CUTTING

1) Full width milling

a) Sweep grit into trench and roll tight

b) Apply minimum 1" of cold patch and re-roll trench 2)

SAWCUTTING

a) Must clean-cut through asphalt and/or concrete

b) Vermeer saw cuts

1) Roll grit into slots and cold patch a minimum of 1 inch B. Concrete pavement shall be saw cut with a power driven concrete saw so as to permit complete breakage of concrete pavement or base without ragged edges. All protruding reinforcing rods shall be cut and removed. All "short slabs" of existing concrete pavement produced by transverse roadway openings, shall be removed. Small or broken longitudinal portions of adjacent slabs shall also be removed at the direction of the DPW C.

TRENCHES

The length of the trench that may be opened at any one time shall not be greater than the length of pipe and the necessary accessories which are available at the site ready to be put in place. Trenches shall be braced and sheathed according to generally accepted safety standards for construction work. Except with the written permission of the DPW, no timber bracing, lagging, sheathing or other lumber shall be left in any trench.

D.

DRIVEWAY - CURBCUT PROCEDURE

a) Before Removing Curb or Apron

1) First saw cut 1 foot from curb face and strip out first layer of asphalt

2) Set face form in asphalt slot

3) Repave slot with hot FABC top

E. UTILITIES

All utility facilities shall be located sufficiently in advance of the trench excavation work to avoid damage of those facilities. The 800 number, call before you dig must be utilized. 1-800-272-1000.

Page #1 Storm drainpipe joints shall be laid over a bed of cement. If the pipe bell or spigot is damaged, a brick collar shall be built around the joint from the cement bed up. The brick collar shall then be floated with a cement layer.

F.

BACKFILLING

Immediately after subject installation has been completed, backfilling shall commence.

If the excavated material is considered unsatisfactory, the contractor shall supply previously approved, densely graded material to be used as backfill. Broken pavement, large stones and debris shall not be used as backfill.

First lift of fill, 12 inches above pipe shall be compacted using a Jumping jack tamper. Successive lifts shall be compacted by mechanical means, such as tamping, vibrating or rolling. A vibra plate tamper is not acceptable and shall not be used.

IV

TEMPORARY PAVEMENT

If, during the winter months, hot mixed bituminous stabilized base is not available, the contractor may substitute cold mixed bituminous concrete patch. However, as soon as hot mixed stabilized base is available the contractor shall proceed with the normal pavement restoration requirements as stipulated below.

V

PAVEMENT RESTORATION

Upon completion of proper compaction of all backfill, an eight (8) inch layer, after compaction, of hot mixed bituminous stabilized base course (State Mix 1-2) shall be constructed in all trench areas as well as those areas where concrete slabs were removed.

Bituminous stabilized base shall be placed in two lifts of four (4) inches and be thoroughly compacted by rolling. The top surface shall be flush with the adjacent pavement and be uniformly contoured to conform to the existing surrounding surface.

A minimum of 300 feet of stabilized base trench is allowed, before immediate replacement of pavement markings are required. Striping will be replaced as per existing markings.

VI

FINAL PAVEMENT

After a reasonable settlement period, to be determined by the DPW, a two- (2) inch (average depth) surface course of FABC Pavement (State Mix 1-5) shall be placed over the entire area of stabilized base.

Prior to the application of the surface course the entire area of stabilized base including twelve (12) inches of all areas of surrounding pavement shall be milled by a milling machine (self propelled, power operated planning, grinding or cutting machine) to a minimum depth of 2". The resulting milled surface shall then be swept and tack coat material shall be applied before the two- (2) inch surface course is applied. This course shall be thoroughly compacted flush with the surrounding surface by rolling and be uniformly contoured to the adjacent pavement.

All manhole frames and covers installed within the pavement area shall be set to finished grade, or just below finished grade. Page # 2

THREE (3) SKETCHES FOLLOW