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abutment act by tension acting by thrust amount of action arch truss assumed beam bearing bolts cast iron cent centre Cloth compression connecting block connecting pin construction counter braces cross-section curve deflection depth of truss diagram diameter distance draw draw bridges edition Engineer equal feet flanges force full load gives gonals greater half Hence horizontal action horizontal reach horizontal thrust Illustrated inclination J. P. WHITNEY joists king braces latter length less liable lifting force lower chord maximum stress maximum weight movable load multiplied negative resistance nodes number of panels oblique members panel truss pieces portion posts practical produced proportion rail road represented respectively rivets side span splice plates square inch strain strength of materials tension material thickness tical timber tion trapezoidal Truss Bridge truss Fig upper chord uprights vertical reach weight acting weight of structure weight sustained whence width wrought iron
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Seite 31 - ... the final sale of these copies, the work will, of course, become more valuable. The work for the last five years has been entirely out of the market, but a few copies that remained in the hands of Prof. Rogers, in Scotland, at the time of his death, are now offered to the public, at a price which is even. below what it was originally sold for when first published.
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