A Treatise on the Strength of Bridges and Roofs: With Practical Applications and Examples for the Use of Engineers and Students

D. Van Nostrand, 1873 - 346 Seiten

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Seite 337 - Of rectangular pillars of timber it was proved experimentally that the pillar of greatest strength, where the length and quantity of material is the same, is a square.
Seite 3 - If three forces acting at one point balance ; three lines parallel to their directions •will form a triangle whose sides ivill be proportional to the forces.
Seite 343 - Solution valid for large values of the ratio between the thickness of the plate and the diameter of the crack has been obtained.
Seite 243 - L, the longitudinal strain, is now in the line of the arc member, instead of in the line of the tangent to the curve at the point x.

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