THE THEORY OF ARCHED RIBS.
286 CHILDS ON THE THEORY OF. ARCHED RIBS. [Selected (Paper No. 4016.) By On the Theory of Arched Ribs." CHARLES VIVIANCHILDS, Assoc. M Inst. C.E. . " TEXT-BOOKS thetheory of structures, when dealing with the on subject of arched ribs, confine their attention to those in which the centre-line takesthe form of a parabolic or circular curve. The object of thisPaper is to show thatthe principles used inthe calculations for such arches may be further extended, so as to apply to arched ribs of any desired form; as, for example, that of the Gothic arch, or of a composite arch, whose centre-line is struck with radii of varying lengths...
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