Griven Vacu - Buock Size = = 300 x 200 x 200 mm 5x = 300 N/mm by = 50 N/mm Zx4 = 150 N, = 150 N/mm To Hond Change In length of Diogonal. 2 [E = 200000 N/mm, P. ratio (H) = 0.3)