- Blankedit
Imposed load = 264.94 KN (from masonary calculation) Load per meter run = 264.94/4.73 = 56.0 KN/m Taking eccentricity, e = 1/24 (for saftey) Self weight of footing below plinth level, 0.23*0.90*1*20 = 4.14 KN/m (0.46+0.69+0.92)*0.115*1*20... more
Imposed load = 264.94 KN (from masonary calculation) Load per meter run = 264.94/4.73 = 56.0 KN/m Taking eccentricity, e = 1/24 (for saftey) Self weight of footing below plinth level, 0.23*0.90*1*20 = 4.14 KN/m (0.46+0.69+0.92)*0.115*1*20 = 4.76 KN/m 1.15*0.075*1*24 = 2.07 KN/m Total load = 10.97 KN/m Total load per meter run (P) = 56.0+10.97 = 66.97 KN/m Check for stress-Stress developed on the base, F 0 7 3 = P/A + M/Z ; Z = Sectional Modulus = BD 2 /6 F 0 7 3 1 = P/B + 6M/B 2 = P/B + 6Pe/B 2 = 66.97/1.15 + 6*66.97/24*1.15 2 = 70.90 < 150 KN/m 2 Hence safe F 0 7 3 2 = P/B-6M/B 2 = P/B-6Pe/B 2 = 66.97/1.15-6*66.97/24*1.152 = 45.58 > 0 Hence Safe.
