Symmetrical Structure, Property and Loading but produces unsymmetric Failure

Hi,

Can you please help me on my STAAD file, i am getting unsymmetric member failure but my structure, properties and loading are all symmetric and equal. I have used pre defined table on my structure

Please find attached STAAD input file.

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 22-Sep-15
JOB NAME MECHANICAL CAR LIFT
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 5 0 0; 3 0.151515 0 0; 4 0.30303 0 0; 5 0.454545 0 0;
6 0.606061 0 0; 7 0.757576 0 0; 8 0.909091 0 0; 9 1.06061 0 0; 10 1.21212 0 0;
11 1.36364 0 0; 12 1.51515 0 0; 13 1.66667 0 0; 14 1.81818 0 0; 15 1.9697 0 0;
16 2.12121 0 0; 17 2.27273 0 0; 18 2.42424 0 0; 19 2.57576 0 0; 20 2.72727 0 0;
21 2.87879 0 0; 22 3.0303 0 0; 23 3.18182 0 0; 24 3.33333 0 0; 25 3.48485 0 0;
26 3.63636 0 0; 27 3.78788 0 0; 28 3.93939 0 0; 29 4.09091 0 0; 30 4.24242 0 0;
31 4.39394 0 0; 32 4.54545 0 0; 33 4.69697 0 0; 34 4.84848 0 0; 35 0 0 2.3;
36 0.151515 0 2.3; 37 0.30303 0 2.3; 38 0.454545 0 2.3; 39 0.606061 0 2.3;
40 0.757576 0 2.3; 41 0.909091 0 2.3; 42 1.06061 0 2.3; 43 1.21212 0 2.3;
44 1.36364 0 2.3; 45 1.51515 0 2.3; 46 1.66667 0 2.3; 47 1.81818 0 2.3;
48 1.9697 0 2.3; 49 2.12121 0 2.3; 50 2.27273 0 2.3; 51 2.42424 0 2.3;
52 2.57576 0 2.3; 53 2.72727 0 2.3; 54 2.87879 0 2.3; 55 3.0303 0 2.3;
56 3.18182 0 2.3; 57 3.33333 0 2.3; 58 3.48485 0 2.3; 59 3.63636 0 2.3;
60 3.78788 0 2.3; 61 3.93939 0 2.3; 62 4.09091 0 2.3; 63 4.24242 0 2.3;
64 4.39394 0 2.3; 65 4.54545 0 2.3; 66 4.69697 0 2.3; 67 4.84848 0 2.3;
68 5 0 2.3; 69 0 0 0.5; 70 0.151515 0 0.5; 71 0.30303 0 0.5; 72 0.454545 0 0.5;
73 0.606061 0 0.5; 74 0.757576 0 0.5; 75 0.909091 0 0.5; 76 1.06061 0 0.5;
77 1.21212 0 0.5; 78 1.36364 0 0.5; 79 1.51515 0 0.5; 80 1.66667 0 0.5;
81 1.81818 0 0.5; 82 1.9697 0 0.5; 83 2.12121 0 0.5; 84 2.27273 0 0.5;
85 2.42424 0 0.5; 86 2.57576 0 0.5; 87 2.72727 0 0.5; 88 2.87879 0 0.5;
89 3.0303 0 0.5; 90 3.18182 0 0.5; 91 3.33333 0 0.5; 92 3.48485 0 0.5;
93 3.63636 0 0.5; 94 3.78788 0 0.5; 95 3.93939 0 0.5; 96 4.09091 0 0.5;
97 4.24242 0 0.5; 98 4.39394 0 0.5; 99 4.54545 0 0.5; 100 4.69697 0 0.5;
101 4.84848 0 0.5; 102 5 0 0.5; 103 0 0 1.8; 104 0.151515 0 1.8;
105 0.30303 0 1.8; 106 0.454545 0 1.8; 107 0.606061 0 1.8; 108 0.757576 0 1.8;
109 0.909091 0 1.8; 110 1.06061 0 1.8; 111 1.21212 0 1.8; 112 1.36364 0 1.8;
113 1.51515 0 1.8; 114 1.66667 0 1.8; 115 1.81818 0 1.8; 116 1.9697 0 1.8;
117 2.12121 0 1.8; 118 2.27273 0 1.8; 119 2.42424 0 1.8; 120 2.57576 0 1.8;
121 2.72727 0 1.8; 122 2.87879 0 1.8; 123 3.0303 0 1.8; 124 3.18182 0 1.8;
125 3.33333 0 1.8; 126 3.48485 0 1.8; 127 3.63636 0 1.8; 128 3.78788 0 1.8;
129 3.93939 0 1.8; 130 4.09091 0 1.8; 131 4.24242 0 1.8; 132 4.39394 0 1.8;
133 4.54545 0 1.8; 134 4.69697 0 1.8; 135 4.84848 0 1.8; 136 5 0 1.8;
137 0 0 2.1; 138 0.151515 0 2.1; 139 0.30303 0 2.1; 140 0.454545 0 2.1;
141 0.606061 0 2.1; 142 0.757576 0 2.1; 143 0.909091 0 2.1; 144 1.06061 0 2.1;
145 1.21212 0 2.1; 146 1.36364 0 2.1; 147 1.51515 0 2.1; 148 1.66667 0 2.1;
149 1.81818 0 2.1; 150 1.9697 0 2.1; 151 2.12121 0 2.1; 152 2.27273 0 2.1;
153 2.42424 0 2.1; 154 2.57576 0 2.1; 155 2.72727 0 2.1; 156 2.87879 0 2.1;
157 3.0303 0 2.1; 158 3.18182 0 2.1; 159 3.33333 0 2.1; 160 3.48485 0 2.1;
161 3.63636 0 2.1; 162 3.78788 0 2.1; 163 3.93939 0 2.1; 164 4.09091 0 2.1;
165 4.24242 0 2.1; 166 4.39394 0 2.1; 167 4.54545 0 2.1; 168 4.69697 0 2.1;
169 4.84848 0 2.1; 170 5 0 2.1; 171 0 0 0.2; 172 5 0 0.2; 173 0.151515 0 0.2;
174 0.30303 0 0.2; 175 0.454545 0 0.2; 176 0.606061 0 0.2; 177 0.757576 0 0.2;
178 0.909091 0 0.2; 179 1.06061 0 0.2; 180 1.21212 0 0.2; 181 1.36364 0 0.2;
182 1.51515 0 0.2; 183 1.66667 0 0.2; 184 1.81818 0 0.2; 185 1.9697 0 0.2;
186 2.12121 0 0.2; 187 2.27273 0 0.2; 188 2.42424 0 0.2; 189 2.57576 0 0.2;
190 2.72727 0 0.2; 191 2.87879 0 0.2; 192 3.0303 0 0.2; 193 3.18182 0 0.2;
194 3.33333 0 0.2; 195 3.48485 0 0.2; 196 3.63636 0 0.2; 197 3.78788 0 0.2;
198 3.93939 0 0.2; 199 4.09091 0 0.2; 200 4.24242 0 0.2; 201 4.39394 0 0.2;
202 4.54545 0 0.2; 203 4.69697 0 0.2; 204 4.84848 0 0.2;
MEMBER INCIDENCES
1 1 3; 2 3 4; 3 4 5; 4 5 6; 5 6 7; 6 7 8; 7 8 9; 8 9 10; 9 10 11; 10 11 12;
11 12 13; 12 13 14; 13 14 15; 14 15 16; 15 16 17; 16 17 18; 17 18 19; 18 19 20;
19 20 21; 20 21 22; 21 22 23; 22 23 24; 23 24 25; 24 25 26; 25 26 27; 26 27 28;
27 28 29; 28 29 30; 29 30 31; 30 31 32; 31 32 33; 32 33 34; 33 34 2; 34 35 36;
35 36 37; 36 37 38; 37 38 39; 38 39 40; 39 40 41; 40 41 42; 41 42 43; 42 43 44;
43 44 45; 44 45 46; 45 46 47; 46 47 48; 47 48 49; 48 49 50; 49 50 51; 50 51 52;
51 52 53; 52 53 54; 53 54 55; 54 55 56; 55 56 57; 56 57 58; 57 58 59; 58 59 60;
59 60 61; 60 61 62; 61 62 63; 62 63 64; 63 64 65; 64 65 66; 65 66 67; 66 67 68;
67 1 171; 68 3 173; 69 4 174; 70 5 175; 71 6 176; 72 7 177; 73 8 178; 74 9 179;
75 10 180; 76 11 181; 77 12 182; 78 13 183; 79 14 184; 80 15 185; 81 16 186;
82 17 187; 83 18 188; 84 19 189; 85 20 190; 86 21 191; 87 22 192; 88 23 193;
89 24 194; 90 25 195; 91 26 196; 92 27 197; 93 28 198; 94 29 199; 95 30 200;
96 31 201; 97 32 202; 98 33 203; 99 34 204; 100 2 172; 101 69 103; 102 70 104;
103 71 105; 104 72 106; 105 73 107; 106 74 108; 107 75 109; 108 76 110;
109 77 111; 110 78 112; 111 79 113; 112 80 114; 113 81 115; 114 82 116;
115 83 117; 116 84 118; 117 85 119; 118 86 120; 119 87 121; 120 88 122;
121 89 123; 122 90 124; 123 91 125; 124 92 126; 125 93 127; 126 94 128;
127 95 129; 128 96 130; 129 97 131; 130 98 132; 131 99 133; 132 100 134;
133 101 135; 134 102 136; 135 103 137; 136 104 138; 137 105 139; 138 106 140;
139 107 141; 140 108 142; 141 109 143; 142 110 144; 143 111 145; 144 112 146;
145 113 147; 146 114 148; 147 115 149; 148 116 150; 149 117 151; 150 118 152;
151 119 153; 152 120 154; 153 121 155; 154 122 156; 155 123 157; 156 124 158;
157 125 159; 158 126 160; 159 127 161; 160 128 162; 161 129 163; 162 130 164;
163 131 165; 164 132 166; 165 133 167; 166 134 168; 167 135 169; 168 136 170;
169 137 35; 170 138 36; 171 139 37; 172 140 38; 173 141 39; 174 142 40;
175 143 41; 176 144 42; 177 145 43; 178 146 44; 179 147 45; 180 148 46;
181 149 47; 182 150 48; 183 151 49; 184 152 50; 185 153 51; 186 154 52;
187 155 53; 188 156 54; 189 157 55; 190 158 56; 191 159 57; 192 160 58;
193 161 59; 194 162 60; 195 163 61; 196 164 62; 197 165 63; 198 166 64;
199 167 65; 200 168 66; 201 169 67; 202 170 68; 203 171 69; 204 172 102;
205 173 70; 206 174 71; 207 175 72; 208 176 73; 209 177 74; 210 178 75;
211 179 76; 212 180 77; 213 181 78; 214 182 79; 215 183 80; 216 184 81;
217 185 82; 218 186 83; 219 187 84; 220 188 85; 221 189 86; 222 190 87;
223 191 88; 224 192 89; 225 193 90; 226 194 91; 227 195 92; 228 196 93;
229 197 94; 230 198 95; 231 199 96; 232 200 97; 233 201 98; 234 202 99;
235 203 100; 236 204 101;
START GROUP DEFINITION
MEMBER
_GST_0 135 TO 168 203 TO 236
_GST_1 1 TO 134 169 TO 202
_1 67 TO 134 169 TO 202
END GROUP DEFINITION
START USER TABLE
*TABLE 1
*UNIT METER KN
*GENERAL
*BUILT_UP_C_PLATE
*0.002049 0.081 0.003 0.175 0.003 2.235e-006 7.444e-006 5.043e-006 -
*4.534e-005 8.508e-005 0.000484 0.001494 5.59e-005 0.0001092 0 0.081
*PROFILE_POINTS
* -0.0875 -0.03025 -0.0875 0.05075 0.0875 0.05075 0.0875 -0.02425 0.0675 -0.02425 0.0675 -0.02125 0.0845 -0.02125 0.0845 0.04775 -0.0845 0.04775 -0.0845 -0.02125 -0.0675 -0.02125 -0.0675 -0.02425 0.0875 -0.02425 0.0875 -0.03025 -0.0875 -0.03025
*TABLE 2
*UNIT METER KN
*CHANNEL
*175X75X20X3.0MM
*0.0011 0.175 0.003 0.075 0.003 6.69e-006 7.85e-007 3.4e-009 0.0218 -
*0.000525 0.0003
*TABLE 2
*UNIT METER KN
*GENERAL
*175X75X20X3.0MM
*0.00105 0.075 0.003 0.175 0.003 7.999e-007 5.127e-006 3.201e-009 1.56e-005 -
*5.859e-005 0.000432 0.0005455 6.787e-005 2.353e-005 4.6081e-009 0.075
*PROFILE_POINTS
* -0.088091 -0.051694 -0.088091 0.023306 0.086909 0.023306 0.086909 -0.051694 0.066909 -0.051694 0.066909 -0.048694 0.083909 -0.048694 0.083909 0.020306 -0.085091 0.020306 -0.085091 -0.048694 -0.071091 -0.048694 -0.071091 -0.051694 -0.088091 -0.051694
*TABLE 3
*UNIT METER KN
*GENERAL
*175X75X20X3.0MM
*0.001059 0.175 0.003 0.075 0.003 5.12684e-006 7.99925e-007 3.0215e-009 -
*5.85925e-005 1.56029e-005 0.0005455 0.0004318 6.78727e-005 2.59229e-005 -
*0 0.175
*PROFILE_POINTS
* -0.0237323 -0.0874999 -0.0237323 0.0875001 0.0512677 0.0875001 0.0512677 0.0675 0.0482677 0.0675 0.0482677 0.0845001 -0.0207323 0.0845001 -0.0207323 -0.0844999 0.0482677 -0.0844999 0.0482677 -0.0675 0.0512677 -0.0675 0.0512677 -0.0874999 -0.0237323 -0.0874999
TABLE 1
UNIT METER KN
CHANNEL
200X75X20X3.0
0.0011 0.2 0.003 0.075 0.003 6.69e-006 7.85e-007 3.4e-009 0.0218 0.0006 0.0003
TABLE 2
UNIT METER KN
GENERAL
150X65X20X3.0PLATE
0.001824 0.071 0.003 0.15 0.003 1.52917e-006 4.95491e-006 2.77e-009 -
3.44347e-005 6.60655e-005 0.000426 0.00147 8.4444e-005 4.89048e-005 -
-2e+037 0.071
PROFILE_POINTS
 -0.075 -0.026592 -0.075 0.044408 0.075 0.044408 0.075 -0.020592 0.055 -0.020592 0.055 -0.017592 0.072 -0.017592 0.072 0.041408 -0.072 0.041408 -0.072 -0.017592 -0.055 -0.017592 -0.055 -0.020592 0.075 -0.020592 0.075 -0.026592 -0.075 -0.026592
TABLE 3
UNIT METER KN
CHANNEL
150X65X20X3.0
0.000822 0.15 0.003 0.065 0.003 3.1e-006 5.02e-007 2.77e-009 0.021 -
0.00045 0.00026
*TABLE 7
*UNIT METER KN
*GENERAL
*150X65X20X3.0.G
*0.000924001 0.065 0.003 0.15 0.003 5.37627e-007 3.26742e-006 2.63648e-009 -
*1.2339e-005 4.35655e-005 0.00025898 0.000351771 1.99734e-005 5.06941e-005 -
*2.49248e-009 0.065
*PROFILE_POINTS
* -0.075 -0.043571 -0.075 0.021429 0.075 0.021429 0.075 -0.043571 0.055 -0.043571 0.055 -0.040571 0.072 -0.040571 0.072 0.018429 -0.072 0.018429 -0.072 -0.040571 -0.055 -0.040571 -0.055 -0.043571 -0.075 -0.043571
END
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.05e+008
POISSON 0.3
DENSITY 76.8195
ALPHA 1.2e-005
DAMP 0.03
TYPE STEEL
STRENGTH FY 253200 FU 407800 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TO 66 UPTABLE 1 200X75X20X3.0
MEMBER PROPERTY AMERICAN
135 TO 168 203 TO 236 UPTABLE 2 150X65X20X3.0PLATE
MEMBER PROPERTY AMERICAN
67 TO 134 169 TO 202 UPTABLE 3 150X65X20X3.0
CONSTANTS
BETA 90 MEMB 67 TO 134 169 TO 202
BETA 180 MEMB 1 TO 33
MATERIAL STEEL ALL
SUPPORTS
6 31 39 64 PINNED
LOAD 1 LOADTYPE None  TITLE SELFWEIGHT
SELFWEIGHT Y -1 
LOAD 2 LOADTYPE None  TITLE CONCENTRATED LOAD P
MEMBER LOAD
142 161 211 230 CON GY -3.7
MEMBER LOAD
108 127 CON GY -15
LOAD COMB 3 ULTIMATE LOAD 1.35DL + 1.5P
1 1.35 2 1.5 
LOAD COMB 4 SERVICE LOAD 1.0DL + 1.0P
1 1.0 2 1.0 
PERFORM ANALYSIS
LOAD LIST 3
PARAMETER 1
CODE EN 1993-1-1:2005
TRACK 0 ALL
TRACK 2 MEMB 74 93 108 127 176 195
RATIO 1 ALL
SGR 1 ALL
TORSION 0 ALL
GST 0 MEMB _GST_0
GST 1 MEMB _GST_1
CHECK CODE ALL
FINISH

Thanks in advance

master mac