A shear wall in a reinforced concrete building is subjected to a vertical uniform load with intensity q and a horizontal force H, as shown in the first part of the figure. (The force H represents the effects of wind and earthquake loads.) As a consequence of these loads, the stresses at point A on the wall surface have the values shown in the second part of the figure (the compressive stress is equal to σy= -1011 psi and the shear stress is equal to τxy= -441 psi).(a) Determine the principal stresses (σ1 and σ2) and show them on a diagram of an appropriately oriented member.(b) Determine the maximum shear stresses (τmax) and the associated normal stresses (σ) and show them on a diagram of a properly oriented member.
