A girder arranged parallel to the main girder for supporting the platform motor base, operators cab, control panels, etc., to reduce the torsional forces that such load would otherwise impose on the main crane girder
Complete Design, Inc. (Construction Design Specialists), Dictionary of Construction Terminology, Washington, USA 2015. http://completedesign.cc/client-resources/dictiona ry-of-construction-terminology, (Const - Amer) {836}