862UTILITY ENCASEMENT PIPE

754

Pipe Diameter inches {mm} Minimum Wall Thickness inches {mm} Pipe Requirements < 4 {101.6} Sch. 40 ASTM A 53, Grade B 4 – 12{101.6 – 304.8} 0.188 {4.78} ASTM A 252, Grade 2 >12 – 24 {>304.8 – 609.6} 0.250 {6.35} ASTM A 252, Grade 2 >24 {609.6} 0.375 {9.525} ASTM A 252, Grade 2 All pipe shall be coated inside and out with at least one shop coat of an approved primer paint. In addition, the external surface shall be treated with one coat of asphaltum paint, meeting the requirements of Federal Specification TT-C-494B Type II, Composition G. Fusion-Bonded Epoxy Coating, meeting the requirements of AWWA C213, may be used as an alternative to the shop coat primer and asphaltum paint. Other approved protection material may be used with prior approval by the Department. Hydrostatic pressure test is not required for this pipe.

862.02Encasement Spacers

Spacers shall be stainless steel or as approved by the Engineer. The spacer shall be sized for the carrier pipe and encasement pipe used.

862.03Encasement End Seals

Encasement end seals shall be synthetic rubber with a stainless steel zipper or closer. The seal shall be secured to the encasement with a stainless steel band clip or thumbscrew clip with a polyethylene strip placed under each clip. Proper flexibility between the carrier pipe and the encasement pipe shall be provided.

862.04Vent Pipes

Vent pipes shall be 2 inch welded steel meeting the requirements of Section 862.01.

862.05High Density Polyethylene (HDPE) Pipe

HDPE pipe and bends 4 inches {101.6 mm} and smaller shall meet the requirements of ASTM D1248, ASTM D 3350 (PE 3408 cell classification 335434C), and ASTM F 714. The HDPE pipe shall have a minimum wall thickness of SDR 11.

WATER PIPE, FIRE HYDRANTS, VALVES, AND APPURTENANCES

863.01Ductile Iron Water Pipe

Ductile Iron pipe shall meet the requirements of AWWA C151 with a minimum working pressure of 150 psi {1030 kPa}. The pipe shall have an inner cement mortar lining meeting AWWA C104 and an outer bituminous coating. The push-on joints shall meet the requirements of AWWA C111. Restrained joints shall meet the requirements of AWWA C110. Lock joint pipe shall meet the requirements of AWWA C151. The pipe length shall be a minimum of 18 feet {5.5 m}.

863.02Ductile Iron Fittings

Ductile Iron fittings shall meet the requirements of AWWA C110, AWWA C153, or AWWA C151 when approved by the Engineer. Fittings shall have an inner cement mortar lining meeting AWWA C104 and an outer bituminous coating. Fittings shall have a minimum pressure rating equal to the adjoining pipe installed. For fittings sizes 4 inch {100 mm} through 12 inch {300 mm}, the minimum pressure rating shall be 250 psi {1720 kPa}.

863.03Copper Water Pipe

Pipe and fittings shall meet the requirements of ASTM B88 Type K.

863.04Poly (Vinyl Chloride) (PVC) Plastic Pipe

Pipe sizes 4 inch {100 mm} to 12 inch {300 mm} shall meet the requirements of AWWA C900 Class 235, DR 18 or heavier. Pipe sizes 14 inch {350 mm} to 48 inch {1200 mm} shall meet the requirements of AWWA C905 Pressure Class 235, DR 18 or heavier. Pipe and fittings sizes smaller than 4 inch {100 mm} shall meet