 | Charles Philip Cotton - 1861 - Počet stránok 140
...their width. The height of abutment, and span, and rise of arch, I suppose prescribed for the engineer. The radius of the circle of which the arch is a segment, is given by the equation, where R=radius, r the rise, and s the semi-span of the arch. In segmerital... | |
 | Benjamin Vaughan Abbott, Austin Abbott - 1866 - Počet stránok 758
...hammer-dressed, the stone shall be cut or shaped so as to range transversely of the arch and conform to the radius of the circle of which the arch is a segment, and shall be laid and grouted in mortar. 21. THE BEICK HA I:I:KI. CULVERTS shall be built of the best... | |
 | Charles Philip Cotton - 1874 - Počet stránok 210
...number of the footings, and not the width of each. The span and rise of a segmental bridge being given, the radius of the circle of which the arch is a segment, is found by the equation, R = where Rrrradius, r the rise, and s the semi-span of the arch. In segmental... | |
 | Edward Spon, Oliver Byrne, Ernest Spon, Francis N. Spon - 1874 - Počet stránok 460
...footings, and not their width. The height of abutment, span, and rise of arch are known quantities. The radius of the circle of which the arch is a segment is given by the equation В = — , where R = radius, r the rise, and a the semi-span of the arch.... | |
 | Walter R. Niessen - 2002 - Počet stránok 742
...determines the shape of each brick or structural unit. Theoretically, each joint is a small piece of the radius of the circle of which the arch is a segment. Each end of the arch rests on a special shape brick called a skewback. The arch becomes self,supporting... | |
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... above may be increased, or must be diminished, according to circumstances. If a greater width of foundation be thought necessary, it must be gained by increasing the number of the footings, and not their width. The height of abutment, and span, and... 