🔍 Key Concepts

• Distinguish between basic structural parts of a crane and added equipment used for control of the load • Think about what a twin crane set absolutely must have to lift anything at all • Consider how a rider block tagline system is used in cargo operations

💭 Think About

• Looking at the illustration, which items appear to be permanent main structures, and which could be added or removed depending on the job? • Could the crane still function as a lifting device without each listed component? Go through A, B, and C one by one. • Which of the listed components is primarily for controlling load swing and position rather than providing the main lifting capability?

✅ Before You Answer

• Identify which parts form the primary lifting structure (without them, no lift is possible). • Decide which component is used to improve control and handling but is not strictly required for a basic lift. • Before choosing an answer, be sure you can explain to yourself why the other options are not optional.