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How do bridge's work? ??? Although there are many types of bridges most bridges work by balancing compression and tension. Place a flexible object like an eraser, sponge, or small  piece of bread between your thumb and index finger. Press your fingers together. One side of  the object will bend inwards and shorten while the other will bend outwards and lengthen.  The shorter side has been compressed, while the other side is under tension . Bridge components experience these tension and compression stresses ARCH BRIDGE ==>> Arch bridge are structures in which each span forms an arch. The arch bridge is one of the oldest types of bridges. Early arch bridges were made from stone. The spans range up to about 1700 ft. GIRDER BRIDGES ==>> Girder bridges are made of beams called girders. The ends of the beams or girders rest on piers or abutments. The span length of girder bridges ranges up to about 1000 ft. TRUSS BRIDG...

 Reinforced Cement Concrete : Advantages of RCC RCC (Reinforced Cement Concrete) RCC (Reinforced Cement Concrete) is the combination of using steel and concrete instead of using only concrete to offset some limitations. Concrete is weak in tensile stress with compared to its compressive stress. To offset this limitation, steel reinforcement is used in the concrete at the place where the section is subjected to tensile stress. Steel is very strong in tensile stress. The reinforcement is usually round in shape with approximate surface deformation is placed in the form in advance of the concrete. When the reinforcement is surrounded by the hardened concrete mass, it form an integral part of the member. The resultant combination of two materials are known as reinforced concrete. In this case the cross-sectional area of the beam or other flexural member is greatly reduced. Advantages of RCC Nowadays, RCC is used in most of the structures. The advantages o...