Plot points A and B of coordinates (0, 100) and (25, -100), respectively as in Fig. 2.16. Draw Mohr’s circle through diameter AB. Point B represents stresses on vertical face. Point C on diameter CD at 2\theta = 140° anticlockwise to diameter AB, represents stress on plane at 20° clockwise to x-axis and point E on diameter EF at 2\theta = 220° anticlockwise to diameter AB, represents stress on plane at 20° anticlockwise to x-axis.