completed within 2 to 5 minutes. Remove the load, and examine the
specimens for splitting cracking or breaking.
2. Pipe Ring Stiffness Constant: The pipe ring stiffness constant shall be
determined using procedures similar to those outlined in ASTM D2412.
The stiffness of HDPE pipe is defined in terms of the load, applied
between parallel plates, which causes 1 percent reduction of pipe
diameter. Test specimens shall be a minimum of two pipe diameters or 4
feet in length, whichever is less.
2.4 GASKETS AND HARDWARE
A. All gaskets shall be %-inch thick, full face Viton with a Shore A durometer
rating between 60 and 80.
B. Joint hardware shall be Type 304 stainless steel.
2.5 FITTINGS
A. Fittings shall be manufactured from polyethylene compound having cell
classification equal to or exceeding compound used in pipe to ensure
compatibility of polyethylene resins.
B. Provide factory-fabricated, dual containment fittings except as indicated
below.
C. Fittings shall be from same manufacturer as pipe being provided. OWNER may
allow substitution for approved material with use of flanged joint sections.
D. Dimensions of fittings conforming to standard dimensions and tolerances in
accordance with ASTM F2206.
E. Fittings shall have the same or higher pressure rating as pipe.
F. Markings
1. Manufacturer’s name or trademark
2 Nominal size
3. Type of plastic pipe (i.e., PE 3408)
4. Standard dimension ratio
5 Extrusion date, lot number or batch number
G. The Drawings do not show all fittings that may be required. CONTRACTOR to
provide all fittings required for a complete installation.
File No. 3066.09 High-Density Polyethylene Pipe 15210 - 6 of 13 December 2017
