Theory of Voussoir Arches |
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arch and load arch ring b₁ c₁ centre line centre of gravity centre of pressure cloth column construction corresponding crown joint cubic foot curve of resistance dead load depth of arch depth of key depth of keystone division dotted draw a line drawn edge edition equal equilibrium polygon force diagram formulas given gives half arch haunches hence horizontal distance horizontal resistances horizontal thrust intersection intrados joints of rupture left springing joint length limit at joint line of resistance line parallel live load locomotive load lower middle third maximum middle third limit mortar multiplying ordinates parallel to ray pier position resistance passes rise scale side solid arch fixed span spandrel specific gravity stone straight line stress tender load theory tion tons touches the extrados trapezoid true line upper middle third V₁ vertical component vertical distance voussoir arch weight of arch zoid
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