AWWA C950:2017 pdf download.FIBERGLASS PRESSURE PIPE
AWWA C950 describes the fabrication and the testing of nominal 1-in. through 144-in. (25-mm through 3,600-mm) fiberglass pipe and joining systems for use in both aboveground and belowground water systems. Service and distribution piping systems and transmission piping systems are included.
Both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber- reinforced polymer mortar pipe (RPMP) are fiberglass pipes. Epoxy-resin and polyester-resin systems are described, and commercial-grade E-type glass is specified as the glass-fiber reinforcement material in the pipe wall. Liner materials incorporated include thermosetting or thermoplastic resin, reinforced or unrein- forced, with or without fillers. Pressure classes described are 50, 100, 150, 200, and 250 psig (345, 689, 1,034, 1,379, and 1,724 Wa). Stiffness classes described are 9, 18, 36, and 72 psi (62, 124,248, and 496 Wal. This standard may be used to the extent applicable for other diameters, pressure classes, and stiffness classes. For information on design, hydraulics, and installation, refer to AWWA Manual M45, Fiberglass Pipe Design.
The following definitions shall apply in this standard:
1. Aggregate: Siliceous sand conforming to ASTM C33, except that the requirements for gradation need not apply.
2. Centrifugal casting: A process used to manufacture tubular goods by applying resin and reinforcement to the inside of a mold that is rotated and heated, subsequently polymerizing the resin system. The outside diameter (OD) of the finished pipe is determined by the inside diameter (ID) of the mold tube. The ID of the finished pipe is determined by the amount of material introduced into the mold. Other materials that will not adversely affect the laminate performance may be introduced in the process during manufacture of the pipe.
3. Constructor The party that provides the work and materials for placement or installation.
4. Epoxy resin (thermosetting): A polymer containing two or more three-mem- bered rings, each consisting of one oxygen and two carbon atoms. The polymer is cured by cross-linking with an amine or anhydride hardener, with or without heat, catalyst, or both.
5. Fiberglass pipe: A tubular product containing glass-fiber reinforcements embedded in or surrounded by cured thermosetting resin. The composite structure may contain aggregate, granular or platelet fillers, thixotropic agents, and pigments or dyes. Thermoplastic or thermosetting liners or coatings may be included.
6. Filament winding: A process used to manufacture tubular goods by winding continuous glass-fiber roving or roving tape onto the outside of a mandrel or core pipe liner in a predetermined pattern under controlled tension. The roving may be saturated with liquid resin or preimpregnated with partially cured resin. Subsequent polymerization of the resin system may require application of heat. The ID of the finished pipe is fixed by the mandrel diameter or the inner diameter of the core pipe liner. The OD of the finished pipe is determined by the amount of material that is wound on the mandrel or core pipe liner. Other materials may be introduced in the process during the manufacture of the pipe, which will not adversely affect the laminate performance.AWWA C950 pdf download.