Load library----Beam Load Library For 50 cm stone wall, unit volume weights of Natural Stones vary between 3000-1600 kgf/m3. Stonewall Unit weight(kgf/m3) = 3000 kgf/m3 Thickness(cm) = 50 cm (0.5 m) Layer Weight(kgf/m2) = 1500 kgf/m2 - Mortar Unit weight(kgf/m3) = 2000 kgf/m3 Thickness(cm) = 2 cm (0.02 m) Layer Weight(kgf/m2) = 20 kgf/m2 when entering the relevant section of the idestatic program: I am waiting for your comments, thank you....