1.1 This specification covers nonreinforced concrete pipe to be used for the conveyance of irrigation water with working pressures, including hydraulic transients, as shown in Table 1 and for use in drainage. 1.2 This This specification covers the specification for the nonreinforced concrete pipe to be used for the conveyance of irrigation water with working pressures, including hydraulic transients, and for use in drainage. The design, joint, and concrete mixture o