Mechanical and marine engineering science ... Specially written as a handbook to the Board of Trade examinations for extra-first-class engineers (1909)
Somerscales, A. N · Glasgow : J. Munro; London, Simpkin, Marshall, Hamilton, Kent · leaf 242
inclined position. BOAT DAVITS., 239 It will be noticed that the foot-step carries the full load of 3780lbs. which hangs from the head ofthe davit, and, therefore, the loadand this vertical reaction form acouple with an arm or leverage =AC, so that the moment to tip thedavit over-board is 3780 x… … As the calculation of AC is troublesome, we have drawn the figureto scale and measured it. (AC = 114 in.) X X 108 in. = 3780 X 114 in.X = 3990 lbs. wliich is the pull upon the bracket. Next for the stress on the metal. The moment of resistance ofthe bar is the same as before, but the bending moment…
Naval architecture
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