AWWA C302:2004 pdf download.Reinforced Concrete Pressure Pipe, Noncylinder Type
This standard describes the manufacture of circumferentially reinforced concrete pressure pipe, without a steel cylinder and not prestressed, in sizes from 12 to 144 in. (300 to 3,660 mm) inclusive and for working pressures not exceeding 55 psi (380 kPa) and working plus surge pressures not exceeding a total pressure of 65 psi (450 kPa). This type of pipe is designed for the internal pressure, external loads, and bedding conditions designated by the purchaser. Pipe of diameters larger than 144 in. (3,660 mm) have been manufactured based on the concepts of this standard. This standard does not include requirements for design, handling, delivery, laying, field testing, or disinfection of pipe. See AWWA Manual M9, Concrete Pressure Pipe, for information on these topics.
The selection of materials is critical for water service and distribution piping in locations where there is likelihood the pipe will be exposed to significant concentrations of pollutants that are comprised of low molecular weight petroleum products or organic solvents or their vapors. Research has documented that pipe materials, such as polyethylene, polybutylene, polyvinyl chloride, and asbestos cement; and elastomers, such as used in jointing gaskets and packing glands, are subject to permeation by lower molecular weight organic solvents or petroleum products. If a water pipe must pass through such a contaminated area or an area subject to contamination, consult with the manufacturer regarding permeation of pipe walls, jointing materials, etc., before selecting materials for use in that area.
4.4.2 Fine aggregate. Fine aggregate used in concrete and mortar shall consist of natural sand or sand prepared from the product obtained by crushing stone or gravel and shall comply with the requirements of ASTM C33. For the purpose of qualifying a source of aggregate to be used in the manufacture of pipe, the apparent specific gravity of fine aggregate, sampled in accordance with ASTM D75 and measured in accordance with ASTM C128, shall not be less than 2.6. Specific gravity measurements and all other mandatory tests listed in ASTM C33 shall be made annually unless the purchaser specifies otherwise, or whenever the source of fine aggregate is changed. Sieve analysis of fine aggregate shall be performed in accordance with ASTM C33 on a weekly basis. The provisions of Sec. 7.2 and Sec. 7.3 of ASTM C33 shall not apply.AWWA C302 pdf download.