Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 357
325 THE NEW METHOD OF "GRAPHICAL STATICS.' and B C perpendiculars to D C, and pro- vision will give us generally a number of duce to intersections E and F with A R triangles and trapezoids. It is necessary to reduce graphically produced. Then lay off F g = a = the given re- to a common base the… … axis of symmetry. Prolong A B and C D and make C a = A B and E b= C D and join a and b. Then the intersection 32. REDUCTION OF TRIANGLE TO EQUIVA- of a b with the axis of symmetry gives LENT RECTANGLE OF GIVEN BASE. the centre of gravity. Let b be the base and h the height. The construction for the…
Engineering
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