🔍 Key Concepts

• Safe working load (SWL) of crane wire rope systems • Function and load share of luff, rider block, and hoist purchases • Manufacturer’s and regulatory limits on wire rope applications

💭 Think About

• Think about which parts of the crane’s wire rope system actually carry or control the main load during lifting operations. • Consider whether any of these purchases are limited to lighter-duty tasks rather than full-rated capacity. • Ask yourself if regulations or safe practice would restrict the use of certain purchases with the crane’s maximum rated load.

✅ Before You Answer

• Verify which purchases are designed to take the full rated load of the crane. • Confirm whether each listed purchase (luff, rider block, hoist) can be sized and rigged to meet or exceed a 30‑ton SWL, according to manufacturer data. • Check if any of the listed purchases are typically used only for positioning or tag-line control, not for lifting the full crane capacity.