§-Quick questions
NSWEngineering StudiesPreliminary Module: Lifting Devices
Quick questions on Wire rope and factors of safety: HSC Engineering Studies Lifting Devices
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is construction of steel wire rope?Show answer
A steel wire rope is built from three nested elements:
What is wire rope on a typical lifting device?Show answer
A tower crane on a Sydney CBD building site might have 19 mm or 22 mm diameter 6 x 36 IWRC rope on the main hoist drum. The rope passes through the boom-tip sheaves and the load block (typically 2-fall or 4-fall, providing additional mechanical advantage as discussed in the pulleys dot point) and terminates at a wedge socket or thimble.
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