Civil-Structures -Techguruji file:///storage/emulated/0/Download/google3097420ad187c8af%20(1).html

How will you recognise points of Contraflexure in different types of Beams K ey Words Different types of Beam, Simply supported, Cantilever, Overhangged, Points of Contraflexure, phenomenon of points of Contraflexure, Vertical forces, Bending moment,UDL,BMdiagrams 1 .Simply Supported Beam A simply supported beam rests freely at both ends . This is why it is also known as a freely supported beam. This type of beam is installed in a way that it has pinned support at one end and a roller support on the other end. It makes it very good at handling resisting vertical forces 2. Cantilever Beam A cantilever is a rigid structural element that extends horizontally and is supported at only one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilever can be formed as a beam, plate, truss, or slab. 3 . overhanging Beam  my If the end portion of a beam extends beyond the support , then the beam is known

  What is Point of  Contraflexure in Bending moment diagrams? The significance of Contraflexure ? Key words:  points of Contraflexure, Contraflexure,  significance of Contraflexure,  curvature,  beam,  sign change in Bending moment diagrams,  inflexion,  significance , Simply supported beam, cantilever beam,over  hangged beam, sfd BMD diagrams, structural Analysis, reinforcement, negative bending moment, sagging, hogging A point of contraflexure is  a point where the curvature of the beam changes sign . It is sometimes referred to as a point of inflexion and will be shown later to occur at the point, or points, on the beam where the B.M. is zero. The significance of points Contraflexure ? point along a beam under a lateral load is known as a point of contraflexure  if the bending moment about the point equals zero .  Knowing the place of the contraflexure is especially useful when designing reinforced concrete or structural steel beams and also for designing bridges. BM changes from +