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3. material designation of PE 3408, with an ASTM D3350 cell classification of 34544C. The pipe shall be black in color, containing approximately 2 percent U.V. stabilizer. The pipe shall be co -extruded with a color coded sheath or have three (3) sets of colored lines at the 120° quadrants. The pipe shall be designed for a working pressure of 160 psi. Pipe shall be extruded to the minimum wall thickness described in AWWA C906 for DRI 1. Pipe outside dimensions shall meet that of ductile iron pipe size (D.I.P.S.). Pipe shall be provided in nominal 40 foot long sections. During the extrusion process, the HDPE pipe shall be continuously marked with durable printing including the following information: 1) Nominal Size 2) Dimension Ratio 3) Manufacturer Name and Product Series 4) Cell Class 5) ASTM Basis 6) Pipe Test Category 7) Plant Identification 8) Production Date B. Fittings HDPE fittings shall be in accordance with ASTM D 3261 and shall be manufactured by injection molding, a combination of extrusion and machining, or fabricated from HDPE pipe conforming to this specification. The fittings shall be designed for a working pressure of 160 psi. The fittings shall be manufactured from the same resin type and cell classification as the pipe itself. The fittings shall be homogeneous throughout and free from cracks, holes foreign inclusions, voids, or other injurious defects. All fittings shall be constructed to have a minimum D.R. 11 sidewall thickness, with a D.I.P.S. outside diameter. C. Joints Sections of polyethylene pipe shall be joined at the job site by the butt fusion process into one continuous length. The joining process shall be the heat fusion method and shall be performed in strict accordance with the pipe manufacturer's recommendations. The heat fusion equipment used in the joining procedures should be capable of meeting all conditions recommended by the pipe manufacturer. EXECUTION OF WORK Installation of the polyethylene pipeline shall be conducted using "medi" — HDD or "maxi" — HDD equipment of intermediate size and capabilities. 'The installation guidelines and practices governing this installation shall follow that of the "maxi" — HDD category rather than "mini" — HDD practices. A. Preparation 1) Clearing — The CONTRACTOR shall perform all clearing necessary, where applicable for the proper installation of the pipe at the locations shown on the drawings. Plantings, shrubbery, trees, utility poles or structures subject to damage 02400 - 4 02400 — Directional Bore Crossings