Question

A 3.0 m long spreader, solid cross section with both ends pinned connection to wire rope carry a load of 10000kg. The material is AISI 1060 carbon steel. With factor of safety, 12 determine the following: a) Minimum dimensions of a square, solid cross section is permitted without having failure? (10 marks) b) Minimum dimensions of a square, hollow cross section with thickness of 5.0 mm without having failure? 

Answer 1

The breaking strength for carbon steel is 841MPa.

$841 × 10⁶ =10000/A\\ A = 0.000012m² = 0.12cm²$

If length is 3.0m, width is $3.96× 10^{-6}m\ (3.96mm)$

(3m, 3.96 mm²)