Prof.Kodali Srinivas

A  cable  is most often two or more wire  running side by side and bonded, twisted or braided together to form a single assembly.  Cables  are used for lifting, hauling and towing or conveying force through tension.  Cables are commonly used to support suspension bridges, as permanent guys for transmission towers, chimneys and building roofs. Analysis of cables : Cables are perfectly flexible members which are assumed to have no flexural strength. They carry loads by simple tension. The reactions at supports (Ra,Ha,Rb,Hb) will be calculated by using three static equations and forth equation is obtained from consideration that the Bending moment at any point in the cable is zero. Shape of the cable:   Cable subjected to concentrated loads, will take the shape of funicular polygon .  cables - parabolic shape   If it is loaded with uniform distributed load along the horizontal span, it will take t...

The arch is one of the oldest structures. The Romans developed the semi circular true masonry arch.which they used extensively in both bridges and aqueducts.  An arch is a curved beam in elevation. The horizontal moment at the supports is wholly or partially prevented in arches. Hence a horizontal thrust induced at the supports. The supports must effectively arrest displacements in the vertical and horizontal directions in the arch action. Types of Arches Based on their geometry, arches can be classified as semicircular, segmental, or pointed. Based on the number of internal hinges, they can be further classified as two-hinged arches, three-hinged arches, or fixed arches.  An arch with a hinge at each support and third hing at the high point / crown or any where in the rib of arch is known as Three Hinged Arch . An arch with a hinge at each support and no hinge exists anywhere in the rib, it will called as a Two-hinged arch. An arch without hinges at  supports and...