Purpose: This manual provides guidance for the design, fabrication, and inspection of spillway tainter gates, trunnion girder, and trunnion girder anchorage for navigation and flood control projects. Load and resistance factor design (LRFD) criteria is specified for design of steel components. Allowable stress design (ASD) criteria is provided in EM 1110-2-2105 and may be used only with prior approval of CECW-ET. Orthotropic shell, vertical framed, and stress skin-type tainter gates may be suitable in some locations but are not covered in this manual. Other types of control gates, including radial lock valves (reverse tainter valves) and sluice gates, may be referred to as tainter gates but also are not included in this manual.