1. For the rectangular column shown in Fig. PI: 65 mm 185 mm 185 mm 65 mm 65 mm 160mm ! 8 No. 28 450 mm 160 m 65 mm 500 Fig. P1 a) Compute Pre, and it's associated moment causing failure. What is the value of e at this point? b) Compute Pamox, and it's associated moment causing failure. What is the value of e at this point? c) Compute Pub, Mons causing failure. What is the value of e at this point? d) For P = 0. find the associated moment M. causing failure. What is the value of eat this point? e) For a moment M.= 245 KN.m, find the associated load P. causing failure. What is the value of eat this point? f) For e-360 mm, what are the load combination (P.Mn) that will cause the column to fail? 9) For a strain = 0.005 (tensile) in the extreme tension steel, find the load combination (P. Mu) that will cause the column to fail? h) For a stress f. = 0 (tensile) in the extreme tension steel, find the load combination (P.,M.) that will cause the column to fail? 1) Sketch the nominal column interaction diagram (P. vs. M.) showing all the points you have solved in parts (ah). 3) Using an excel sheet, Draw the nominal column interaction diagram (K. vs. R.) for c values from to 0 (ie.start c- big number such as 5000mm to C=0.1) Note: f'c 25 MPa and fy: 420 MPa. Bending is about the strong axis. 1. For the rectangular column shown in Fig. PI: 65 mm 185 mm 185 mm 65 mm 65 mm 160mm ! 8 No. 28 450 mm 160 m 65 mm 500 Fig. P1 a) Compute Pre, and it's associated moment causing failure. What is the value of e at this point? b) Compute Pamox, and it's associated moment causing failure. What is the value of e at this point? c) Compute Pub, Mons causing failure. What is the value of e at this point? d) For P = 0. find the associated moment M. causing failure. What is the value of eat this point? e) For a moment M.= 245 KN.m, find the associated load P. causing failure. What is the value of eat this point? f) For e-360 mm, what are the load combination (P.Mn) that will cause the column to fail? 9) For a strain = 0.005 (tensile) in the extreme tension steel, find the load combination (P. Mu) that will cause the column to fail? h) For a stress f. = 0 (tensile) in the extreme tension steel, find the load combination (P.,M.) that will cause the column to fail? 1) Sketch the nominal column interaction diagram (P. vs. M.) showing all the points you have solved in parts (ah). 3) Using an excel sheet, Draw the nominal column interaction diagram (K. vs. R.) for c values from to 0 (ie.start c- big number such as 5000mm to C=0.1) Note: f'c 25 MPa and fy: 420 MPa. Bending is about the strong axis