- Consider Self Weight Only Draw The Stress And Strain Distributions At Midspan Do Not Give Incorrect Drawings If You Do 1 (51.46 KiB) Viewed 45 times
2) A timber beam, with rectangular cross section (h * b) will be reinforced with steel plates of thickness t securely connected on the top left and right sides, and thickness 2t on the bottom. This will ensure composite action in bending. The section is then used as a simply supported beam of length L (given by the span to depth ratio L/h below). The beam is oriented such that the minor principal axis is vertical. It should be taken that Psteel = 7850 kg/mº, Primber = 1150 kg/mº, Esimber = 10500 MPa and Esteet = 200000 MPa, and that both materials exhibit linear elastic behaviour. The design engineer needs to ensure the following: Timber bending stress in tension s 7 MPa Timber bending stress in compression s 7.5 MPa Steel bending stress (tension or compression) 175 MPa Ignore stresses due to shear . .