All outlets will be made of appropriate materials with due regard for loading condition, seismic forces, thermal expansion, resistance to corrosion, and potential abrasion. The use of corrugated metal pipes and other thin-walled steel pipes will not be accepted unless they serve only to provide a form for a poured-in-place concrete conduit or they are specifically accepted in writing by the State Engineer.

KEY: dams, earthquakes, floods, reservoirs

Date of Last Change: March 24, 2016

Notice of Continuation: October 2, 2025

Authorizing, and Implemented or Interpreted Law: 73-5a