Scotch derricks – their use in Hong Kong construction projects
Ian Wolfe: The second photo shows construction of the basement of the Old Bank of China in progress with a Scotch [also known as a stiff-leg] derrick as the only means of rigging heavy steel sections, which was required for the excavation and lateral suppport (ESL) work when this was getting deeper. Scotch derricks were common in the old days […]
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