That said, if this is for actual work, please buy the official guide from the author. My post is just for study/reference.
Widely regarded as a premier textbook outlining legitimate engineering principles for heavy lifts. Advanced Digital Alternatives: Software vs. PDF Manuals
The most critical step in any rigging operation is determining the weight of the load to be hoisted. If this information is not available from shipping papers or design plans, it must be calculated. Equally important is locating the Center of Gravity. The crane hook must be positioned directly above the CoG to ensure the load lifts level and true. That said, if this is for actual work,
The gold standard, though often paid, summaries and related training guides are frequently available. What Defines "Extra Quality"? Clear diagrams. Examples with worked solutions. Up-to-date safety factors (e.g., 5:1 for general rigging). References to current OSHA/ASME standards. 4. Key Considerations for Lifting Plans A comprehensive rigging plan should include:
Downloading copyrighted engineering manuals or calculation guides without payment (illegally) violates intellectual property laws and can expose your device to malware. Always use legitimate sources like institutional subscriptions, official engineering bodies (e.g., ASME, NATE), or reputable free resources from universities. Advanced Digital Alternatives: Software vs
The Sling Angle Factor (also known as the Load Angle Factor) is the mathematical multiplier used to calculate the increased load on a sling. It is calculated using trigonometry based on the angle between the sling and the horizontal plane (
Wind speed limitations, ground bearing pressure. 5. Free Digital Tools for Rigging Calculations Equally important is locating the Center of Gravity
Many field professionals search for terms like hoping to find a magic spreadsheet or a shortcut document. However, true "extra quality" in rigging engineering does not come from a downloaded template; it comes from deeply understanding the core mechanical principles, structural limits, and safety standards that govern the industry.