Rationale

Updating the materials to align with the current language in C 1227, 5.11, which currently reads: 5.11 Fibers—Polypropylene, polyolefin, or glass fibers are only permitted as a secondary reinforcing material, at the manufacturer’s option, in precast concrete septic tanks. For the purposes of this specification, secondary reinforcing material is only used to resist temperature and shrinkage effects. Only Type II or III conforming to the requirements of Specification C1116/C1116M shall be accepted.