The assumptions made in theory of bending The following are the assumptions made in theory of bending: 1. The material of beam is homogeneous and isotropic. (Isotropic means having the properties same in all directions.) 2. The beam is straight before loading. 3. The beam is of uniform cross section throughout its length. 4. Transverse sections, which are plane before loading, remains plane even after loading. 5. The material is elastic and Hooke's law is applicable. 6. The effect of shear is neglected. Therefore the analysis is meant for pure bending. 7. The modulus of elasticity, E has same value in tension and compression. 8. Each layer is free to expand or contract having no influence in the neighbouring layers for their extension or contraction. 9. The beam is initially straight and all longitudinal filament bend into circular arcs with a common centre of curvature.
What are IS Codes for Civil Engineering? IS codes is known as Indian Standard codes, are a collection of standards formulated by the Bureau of Indian Standards (BIS) for diverse aspects of civil engineering. These codes offer guidelines, specifications, and safety prerequisites for construction materials, design parameters, testing techniques, and construction practices. They serve as a reference to guarantee consistency, safety, and excellence in civil engineering projects throughout India. List of IS Codes for Civil Engineering IS Code for Cement and Concrete IS 269:1989 : Ordinary Portland cement, OPC 33. IS 383:1970 : Coarse and Fine aggregates from natural sources for concrete. IS 455:1989 : Portland slag cement. IS 456:2000 : Code of practice for plain concrete and reinforced concrete (PCC and RCC). IS 457:1957 : Code of practice for general construction of plain and reinforced concrete for dams and other massive structures. IS 516:1959 : Method of test for strength of conc...