: A procedural guide for determining object volume and weight for safe rigging.
Modern rigging engineering has evolved past static paper charts. Transitioning to professional software improves calculation accuracy and documentation speed. Feature / Tool Static PDF Manuals Professional Rigging Software Manual math, high risk of user error Instantaneous, automated verification 3D Visualization Real-time clearance and collision checks Compliance Checking Requires manual cross-referencing Built-in alerts for ASME/OSHA violations Documentation Hand-written or typed lift plans Professional, exportable PDF reports
High-resolution charts showing sling configurations (choker, basket, vertical) and their respective capacity reductions.
C=Total Weight2×1tan(θ)cap C equals the fraction with numerator Total Weight and denominator 2 end-fraction cross the fraction with numerator 1 and denominator tangent open paren theta close paren end-fraction