4 ment would bfl to .support the Jib in three places. One end supportedat the mast and the other two supports at the most advantageouspoints,whioh are found, an follows. In oase one strut lb us -d, seeFigure 3,the most advantageous point to place the strut would be tomake >b= 1/5 a.; but an…
Cranes, derricks, etc · Theses
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