§195.110. External loads. — Inbound Citations

(d) The minimum wall thickness of the pipe may not be less than 87.5 percent of the value used for nominal wall thickness in determining the internal design pressure under paragraph (a) of this section. In addition, the anticipated external loads and external pressures that are concurrent with internal pressure must be considered in accordance with §§ 195.108 and 195.110 and, after determining the internal design pressure, the nominal wall thickness must be increased as necessary to compensate for these concurrent loads and pressures.

(3) ASME B31.4-2019, Pipeline Transportation Systems for Liquids and Slurries: ASME Code for Pressure Piping, B31, issued November 1, 2019, (ASME B31.4); IBR approved for § 195.110(a).