When a rectangular beam is loaded vertically downwards, the maximum compressive stress is developed on the-
Top layer
The furthest point from the neutral axis on the top side is the very top surface or top layer of the beam. Therefore, the maximum compressive stress is developed on the top layer when a rectangular beam is loaded vertically downwards.
Important Questions from Shear Stress and Bending Stress
- For a beam to be classified as a beam of uniform strength, which of the following conditions must be met?
For a circular cross-section, the relationship between the maximum shear stress (qmax) and average shear stress (qav) is gives as
A block is of dimensions of the upper surface 100 mm x 100 mm. The height of the block is 10 mm. A tangential force of 10 kN is applied at the centre of the upper surface. The block is displaced by 1 mm with respect to the lower face. Direct shear stress in the element is:
The ratio of moment carrying capacity of a square cross-section beam of dimension D to the moment carrying capacity of a circular cross-section of diameter D is:
The maximum shear stress in a rectangular cross section _________ per cent greater than the average shear stress on the cross section.
