Specification covers: materials, etc.; service conditions; load indication; factors of safety and allowable working stresses; crane structure; welding rivets and bolts in crane structure; wire ropes; rotating and fixed shafts and axles; brakes; controls; manual power; testing; etc.
Derrick cranes (hand operated)
Brit. Eng. Standards Assn. -- Specification
1930
26 pages
3 Figs.
Article (Journal)
English
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