Moving Load Generator Combined with Dead Load in StaadPro

Sometime we have to face moving load such load produced by mobile traveling crane or vehicle load on a bridge. We have to determine which location along the length of structure that produce the biggest moment or defflection exerted from the moving load. This is a paintfull works as we have to make many load cases that describe how the load is moved.

Some softwares have the ability to calculate the forces exerted from moving load and then combined them with other load cases such dead, live or with wind load. What happed in StaadPro is so far I know it has no the ability to combine it with other load cases automatically. Indeed we could use moving load generator in Staadpro but how to combine them with other load cases?. So with this short explanation will show you on how
staad could combined the moving load and the other loads as well.

Basically, if we use moving load generator in Staadpro say case 1 is for deadload and case 2 to 11 is for moving load generator. We could combined them in load combination case manually on staad script editor. To make it simple say that we have a problem in designing a simply supported beam spanned 10m length. Loaded from mobile crane which has two wheels with force 8Ton each. The spaced between wheel is 1m. Addtionaly
the beam also support a uniform load 0.5T/m on top of it along the length. The problem above can be solved using staadpro by utilyzing moving load generator after that we have to combined them manually in script editor with dead load case. The complete staad script is shown below and design result is as follow:

1. Size of beam is H700x300x13x24
2. The stress ratio is 1.04
3. Maximum defflection is 11.701mm

STAAD PLANE
START JOB INFORMATION
ENGINEER DATE 11-Feb-08
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER MTON
JOINT COORDINATES
1 0 0 0; 2 10 0 0;
MEMBER INCIDENCES
1 1 2;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.09042e+007
POISSON 0.3
DENSITY 7.83341
ALPHA 1.2e-005
DAMP 0.03
END DEFINE MATERIAL
CONSTANTS
MATERIAL STEEL MEMB 1
MEMBER PROPERTY JAPANESE
1 TABLE ST H700X300X13
SUPPORTS
1 2 PINNED
DEFINE MOVING LOAD
TYPE 1 LOAD 8 8
DIST 1
LOAD 1 DL
SELFWEIGHT Y -1
MEMBER LOAD
1 UNI GY -0.5
1 UNI GY -0.5
LOAD GENERATION 15
TYPE 1 0 0 0 XINC 0.5
LOAD COMB 101 DL+CASE1
1 1.0 2 1.0
LOAD COMB 102 DL+CASE2
1 1.0 3 1.0
LOAD COMB 103 DL+CASE3
1 1.0 4 1.0
LOAD COMB 104 DL+CASE4
1 1.0 5 1.0
LOAD COMB 105 DL+CASE5
1 1.0 6 1.0
LOAD COMB 106 DL+CASE6
1 1.0 7 1.0
LOAD COMB 107 DL+CASE7
1 1.0 8 1.0
LOAD COMB 108 DL+CASE8
1 1.0 9 1.0
LOAD COMB 109 DL+CASE9
1 1.0 10 1.0
LOAD COMB 110 DL+CASE10
1 1.0 11 1.0
LOAD COMB 111 DL+CASE11
1 1.0 12 1.0
LOAD COMB 112 DL+CASE12
1 1.0 13 1.0
LOAD COMB 113 DL+CASE13
1 1.0 14 1.0
LOAD COMB 114 DL+CASE14
1 1.0 15 1.0
LOAD COMB 115 DL+CASE15
1 1.0 16 1.0
PERFORM ANALYSIS
PARAMETER
CODE AISC
CHECK CODE MEMB 1
FINISH

7 Responses

  1. I Need combination of 2 wheel load… 2 wheels run simultaneously at the same time.

  2. Try this one…a two lane bridge with three supports loaded from HS20 moving load which move paralelly on each lane. you can combine it dead load and then compare the result with uniform lane load. The worst is govern.

    STAAD SPACE
    START JOB INFORMATION
    ENGINEER DATE 01-Mar-08
    END JOB INFORMATION
    INPUT WIDTH 79
    UNIT METER MTON
    JOINT COORDINATES
    1 0 0 0; 2 40 0 0; 3 20 0 0; 4 0 0 2; 5 40 0 2; 6 20 0 2; 7 0 0 4; 8 40 0 4;
    9 20 0 4; 10 0 0 6; 11 40 0 6; 12 20 0 6; 13 1 0 0; 14 1 0 2; 15 1 0 4;
    16 1 0 6; 17 0 0 -1; 18 1 0 -1; 19 0 0 7; 20 1 0 7; 21 2 0 0; 22 2 0 2;
    23 2 0 4; 24 2 0 6; 25 2 0 -1; 26 2 0 7; 27 3 0 0; 28 3 0 2; 29 3 0 4;
    30 3 0 6; 31 3 0 -1; 32 3 0 7; 33 4 0 0; 34 4 0 2; 35 4 0 4; 36 4 0 6;
    37 4 0 -1; 38 4 0 7; 39 5 0 0; 40 5 0 2; 41 5 0 4; 42 5 0 6; 43 5 0 -1;
    44 5 0 7; 45 6 0 0; 46 6 0 2; 47 6 0 4; 48 6 0 6; 49 6 0 -1; 50 6 0 7;
    51 7 0 0; 52 7 0 2; 53 7 0 4; 54 7 0 6; 55 7 0 -1; 56 7 0 7; 57 8 0 0;
    58 8 0 2; 59 8 0 4; 60 8 0 6; 61 8 0 -1; 62 8 0 7; 63 9 0 0; 64 9 0 2;
    65 9 0 4; 66 9 0 6; 67 9 0 -1; 68 9 0 7; 69 10 0 0; 70 10 0 2; 71 10 0 4;
    72 10 0 6; 73 10 0 -1; 74 10 0 7; 75 11 0 0; 76 11 0 2; 77 11 0 4; 78 11 0 6;
    79 11 0 -1; 80 11 0 7; 81 12 0 0; 82 12 0 2; 83 12 0 4; 84 12 0 6; 85 12 0 -1;
    86 12 0 7; 87 13 0 0; 88 13 0 2; 89 13 0 4; 90 13 0 6; 91 13 0 -1; 92 13 0 7;
    93 14 0 0; 94 14 0 2; 95 14 0 4; 96 14 0 6; 97 14 0 -1; 98 14 0 7; 99 15 0 0;
    100 15 0 2; 101 15 0 4; 102 15 0 6; 103 15 0 -1; 104 15 0 7; 105 16 0 0;
    106 16 0 2; 107 16 0 4; 108 16 0 6; 109 16 0 -1; 110 16 0 7; 111 17 0 0;
    112 17 0 2; 113 17 0 4; 114 17 0 6; 115 17 0 -1; 116 17 0 7; 117 18 0 0;
    118 18 0 2; 119 18 0 4; 120 18 0 6; 121 18 0 -1; 122 18 0 7; 123 19 0 0;
    124 19 0 2; 125 19 0 4; 126 19 0 6; 127 19 0 -1; 128 19 0 7; 129 20 0 -1;
    130 20 0 7; 131 21 0 0; 132 21 0 2; 133 21 0 4; 134 21 0 6; 135 21 0 -1;
    136 21 0 7; 137 22 0 0; 138 22 0 2; 139 22 0 4; 140 22 0 6; 141 22 0 -1;
    142 22 0 7; 143 23 0 0; 144 23 0 2; 145 23 0 4; 146 23 0 6; 147 23 0 -1;
    148 23 0 7; 149 24 0 0; 150 24 0 2; 151 24 0 4; 152 24 0 6; 153 24 0 -1;
    154 24 0 7; 155 25 0 0; 156 25 0 2; 157 25 0 4; 158 25 0 6; 159 25 0 -1;
    160 25 0 7; 161 26 0 0; 162 26 0 2; 163 26 0 4; 164 26 0 6; 165 26 0 -1;
    166 26 0 7; 167 27 0 0; 168 27 0 2; 169 27 0 4; 170 27 0 6; 171 27 0 -1;
    172 27 0 7; 173 28 0 0; 174 28 0 2; 175 28 0 4; 176 28 0 6; 177 28 0 -1;
    178 28 0 7; 179 29 0 0; 180 29 0 2; 181 29 0 4; 182 29 0 6; 183 29 0 -1;
    184 29 0 7; 185 30 0 0; 186 30 0 2; 187 30 0 4; 188 30 0 6; 189 30 0 -1;
    190 30 0 7; 191 31 0 0; 192 31 0 2; 193 31 0 4; 194 31 0 6; 195 31 0 -1;
    196 31 0 7; 197 32 0 0; 198 32 0 2; 199 32 0 4; 200 32 0 6; 201 32 0 -1;
    202 32 0 7; 203 33 0 0; 204 33 0 2; 205 33 0 4; 206 33 0 6; 207 33 0 -1;
    208 33 0 7; 209 34 0 0; 210 34 0 2; 211 34 0 4; 212 34 0 6; 213 34 0 -1;
    214 34 0 7; 215 35 0 0; 216 35 0 2; 217 35 0 4; 218 35 0 6; 219 35 0 -1;
    220 35 0 7; 221 36 0 0; 222 36 0 2; 223 36 0 4; 224 36 0 6; 225 36 0 -1;
    226 36 0 7; 227 37 0 0; 228 37 0 2; 229 37 0 4; 230 37 0 6; 231 37 0 -1;
    232 37 0 7; 233 38 0 0; 234 38 0 2; 235 38 0 4; 236 38 0 6; 237 38 0 -1;
    238 38 0 7; 239 39 0 0; 240 39 0 2; 241 39 0 4; 242 39 0 6; 243 39 0 -1;
    244 39 0 7; 245 40 0 -1; 246 40 0 7;
    MEMBER INCIDENCES
    1 1 13; 2 3 131; 3 4 14; 4 6 132; 5 7 15; 6 9 133; 7 10 16; 8 12 134; 9 13 21;
    10 14 22; 11 15 23; 12 16 24; 18 21 27; 19 22 28; 20 23 29; 21 24 30; 27 27 33;
    28 28 34; 29 29 35; 30 30 36; 36 33 39; 37 34 40; 38 35 41; 39 36 42; 45 39 45;
    46 40 46; 47 41 47; 48 42 48; 54 45 51; 55 46 52; 56 47 53; 57 48 54; 63 51 57;
    64 52 58; 65 53 59; 66 54 60; 72 57 63; 73 58 64; 74 59 65; 75 60 66; 81 63 69;
    82 64 70; 83 65 71; 84 66 72; 90 69 75; 91 70 76; 92 71 77; 93 72 78; 99 75 81;
    100 76 82; 101 77 83; 102 78 84; 108 81 87; 109 82 88; 110 83 89; 111 84 90;
    117 87 93; 118 88 94; 119 89 95; 120 90 96; 126 93 99; 127 94 100; 128 95 101;
    129 96 102; 135 99 105; 136 100 106; 137 101 107; 138 102 108; 144 105 111;
    145 106 112; 146 107 113; 147 108 114; 153 111 117; 154 112 118; 155 113 119;
    156 114 120; 162 117 123; 163 118 124; 164 119 125; 165 120 126; 171 123 3;
    172 124 6; 173 125 9; 174 126 12; 185 131 137; 186 132 138; 187 133 139;
    188 134 140; 194 137 143; 195 138 144; 196 139 145; 197 140 146; 203 143 149;
    204 144 150; 205 145 151; 206 146 152; 212 149 155; 213 150 156; 214 151 157;
    215 152 158; 221 155 161; 222 156 162; 223 157 163; 224 158 164; 230 161 167;
    231 162 168; 232 163 169; 233 164 170; 239 167 173; 240 168 174; 241 169 175;
    242 170 176; 248 173 179; 249 174 180; 250 175 181; 251 176 182; 257 179 185;
    258 180 186; 259 181 187; 260 182 188; 266 185 191; 267 186 192; 268 187 193;
    269 188 194; 275 191 197; 276 192 198; 277 193 199; 278 194 200; 284 197 203;
    285 198 204; 286 199 205; 287 200 206; 293 203 209; 294 204 210; 295 205 211;
    296 206 212; 302 209 215; 303 210 216; 304 211 217; 305 212 218; 311 215 221;
    312 216 222; 313 217 223; 314 218 224; 320 221 227; 321 222 228; 322 223 229;
    323 224 230; 329 227 233; 330 228 234; 331 229 235; 332 230 236; 338 233 239;
    339 234 240; 340 235 241; 341 236 242; 347 239 2; 348 240 5; 349 241 8;
    350 242 11;
    ELEMENT INCIDENCES SHELL
    13 1 4 14 13; 14 4 7 15 14; 15 7 10 16 15; 16 17 1 13 18; 17 10 19 20 16;
    22 13 14 22 21; 23 14 15 23 22; 24 15 16 24 23; 25 18 13 21 25; 26 16 20 26 24;
    31 21 22 28 27; 32 22 23 29 28; 33 23 24 30 29; 34 25 21 27 31; 35 24 26 32 30;
    40 27 28 34 33; 41 28 29 35 34; 42 29 30 36 35; 43 31 27 33 37; 44 30 32 38 36;
    49 33 34 40 39; 50 34 35 41 40; 51 35 36 42 41; 52 37 33 39 43; 53 36 38 44 42;
    58 39 40 46 45; 59 40 41 47 46; 60 41 42 48 47; 61 43 39 45 49; 62 42 44 50 48;
    67 45 46 52 51; 68 46 47 53 52; 69 47 48 54 53; 70 49 45 51 55; 71 48 50 56 54;
    76 51 52 58 57; 77 52 53 59 58; 78 53 54 60 59; 79 55 51 57 61; 80 54 56 62 60;
    85 57 58 64 63; 86 58 59 65 64; 87 59 60 66 65; 88 61 57 63 67; 89 60 62 68 66;
    94 63 64 70 69; 95 64 65 71 70; 96 65 66 72 71; 97 67 63 69 73; 98 66 68 74 72;
    103 69 70 76 75; 104 70 71 77 76; 105 71 72 78 77; 106 73 69 75 79;
    107 72 74 80 78; 112 75 76 82 81; 113 76 77 83 82; 114 77 78 84 83;
    115 79 75 81 85; 116 78 80 86 84; 121 81 82 88 87; 122 82 83 89 88;
    123 83 84 90 89; 124 85 81 87 91; 125 84 86 92 90; 130 87 88 94 93;
    131 88 89 95 94; 132 89 90 96 95; 133 91 87 93 97; 134 90 92 98 96;
    139 93 94 100 99; 140 94 95 101 100; 141 95 96 102 101; 142 97 93 99 103;
    143 96 98 104 102; 148 99 100 106 105; 149 100 101 107 106;
    150 101 102 108 107; 151 103 99 105 109; 152 102 104 110 108;
    157 105 106 112 111; 158 106 107 113 112; 159 107 108 114 113;
    160 109 105 111 115; 161 108 110 116 114; 166 111 112 118 117;
    167 112 113 119 118; 168 113 114 120 119; 169 115 111 117 121;
    170 114 116 122 120; 175 117 118 124 123; 176 118 119 125 124;
    177 119 120 126 125; 178 121 117 123 127; 179 120 122 128 126; 180 123 124 6 3;
    181 124 125 9 6; 182 125 126 12 9; 183 127 123 3 129; 184 126 128 130 12;
    189 3 6 132 131; 190 6 9 133 132; 191 9 12 134 133; 192 129 3 131 135;
    193 12 130 136 134; 198 131 132 138 137; 199 132 133 139 138;
    200 133 134 140 139; 201 135 131 137 141; 202 134 136 142 140;
    207 137 138 144 143; 208 138 139 145 144; 209 139 140 146 145;
    210 141 137 143 147; 211 140 142 148 146; 216 143 144 150 149;
    217 144 145 151 150; 218 145 146 152 151; 219 147 143 149 153;
    220 146 148 154 152; 225 149 150 156 155; 226 150 151 157 156;
    227 151 152 158 157; 228 153 149 155 159; 229 152 154 160 158;
    234 155 156 162 161; 235 156 157 163 162; 236 157 158 164 163;
    237 159 155 161 165; 238 158 160 166 164; 243 161 162 168 167;
    244 162 163 169 168; 245 163 164 170 169; 246 165 161 167 171;
    247 164 166 172 170; 252 167 168 174 173; 253 168 169 175 174;
    254 169 170 176 175; 255 171 167 173 177; 256 170 172 178 176;
    261 173 174 180 179; 262 174 175 181 180; 263 175 176 182 181;
    264 177 173 179 183; 265 176 178 184 182; 270 179 180 186 185;
    271 180 181 187 186; 272 181 182 188 187; 273 183 179 185 189;
    274 182 184 190 188; 279 185 186 192 191; 280 186 187 193 192;
    281 187 188 194 193; 282 189 185 191 195; 283 188 190 196 194;
    288 191 192 198 197; 289 192 193 199 198; 290 193 194 200 199;
    291 195 191 197 201; 292 194 196 202 200; 297 197 198 204 203;
    298 198 199 205 204; 299 199 200 206 205; 300 201 197 203 207;
    301 200 202 208 206; 306 203 204 210 209; 307 204 205 211 210;
    308 205 206 212 211; 309 207 203 209 213; 310 206 208 214 212;
    315 209 210 216 215; 316 210 211 217 216; 317 211 212 218 217;
    318 213 209 215 219; 319 212 214 220 218; 324 215 216 222 221;
    325 216 217 223 222; 326 217 218 224 223; 327 219 215 221 225;
    328 218 220 226 224; 333 221 222 228 227; 334 222 223 229 228;
    335 223 224 230 229; 336 225 221 227 231; 337 224 226 232 230;
    342 227 228 234 233; 343 228 229 235 234; 344 229 230 236 235;
    345 231 227 233 237; 346 230 232 238 236; 351 233 234 240 239;
    352 234 235 241 240; 353 235 236 242 241; 354 237 233 239 243;
    355 236 238 244 242; 356 239 240 5 2; 357 240 241 8 5; 358 241 242 11 8;
    359 243 239 2 245; 360 242 244 246 11;
    ELEMENT PROPERTY
    13 TO 17 22 TO 26 31 TO 35 40 TO 44 49 TO 53 58 TO 62 67 TO 71 76 TO 80 85 –
    86 TO 89 94 TO 98 103 TO 107 112 TO 116 121 TO 125 130 TO 134 139 TO 143 148 –
    149 TO 152 157 TO 161 166 TO 170 175 TO 184 189 TO 193 198 TO 202 207 TO 211 –
    216 TO 220 225 TO 229 234 TO 238 243 TO 247 252 TO 256 261 TO 265 –
    270 TO 274 279 TO 283 288 TO 292 297 TO 301 306 TO 310 315 TO 319 –
    324 TO 328 333 TO 337 342 TO 346 351 TO 360 THICKNESS 0.17
    DEFINE MATERIAL START
    ISOTROPIC STEEL
    E 2.09042e+007
    POISSON 0.3
    DENSITY 7.83341
    ALPHA 1.2e-005
    DAMP 0.03
    ISOTROPIC CONCRETE
    E 2.21467e+006
    POISSON 0.17
    DENSITY 2.40262
    ALPHA 1e-005
    DAMP 0.05
    END DEFINE MATERIAL
    CONSTANTS
    MATERIAL STEEL MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 –
    64 TO 66 72 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 –
    126 TO 129 135 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 –
    185 TO 188 194 TO 197 203 TO 206 212 TO 215 221 TO 224 230 TO 233 –
    239 TO 242 248 TO 251 257 TO 260 266 TO 269 275 TO 278 284 TO 287 –
    293 TO 296 302 TO 305 311 TO 314 320 TO 323 329 TO 332 338 TO 341 –
    347 TO 350
    MATERIAL CONCRETE MEMB 13 TO 17 22 TO 26 31 TO 35 40 TO 44 49 TO 53 –
    58 TO 62 67 TO 71 76 TO 80 85 TO 89 94 TO 98 103 TO 107 112 TO 116 –
    121 TO 125 130 TO 134 139 TO 143 148 TO 152 157 TO 161 166 TO 170 –
    175 TO 184 189 TO 193 198 TO 202 207 TO 211 216 TO 220 225 TO 229 –
    234 TO 238 243 TO 247 252 TO 256 261 TO 265 270 TO 274 279 TO 283 –
    288 TO 292 297 TO 301 306 TO 310 315 TO 319 324 TO 328 333 TO 337 –
    342 TO 346 351 TO 360
    MEMBER PROPERTY JAPANESE
    1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 72 TO 75 81 –
    82 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 TO 138 144 –
    145 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 203 TO 206 –
    212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 257 TO 260 –
    266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 311 TO 314 –
    320 TO 323 329 TO 332 338 TO 341 347 TO 350 TABLE ST H700X300X13
    SUPPORTS
    1 2 4 5 7 8 10 11 FIXED BUT FX MY MZ
    3 6 9 12 FIXED BUT MY MZ
    DEFINE MOVING LOAD
    TYPE 1 HS20 1
    LOAD 1 DL
    SELFWEIGHT Y -1
    LOAD 2 LL
    SELFWEIGHT Y -1
    SELFWEIGHT Y 1
    LOAD GENERATION 30
    TYPE 1 -4 0 2 XINC 1
    TYPE 1 -4 0 6 XINC 1
    PERFORM ANALYSIS
    PARAMETER
    CODE AISC
    LY 2 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 72 –
    73 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    UNT 2 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 72 –
    73 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    UNB 2 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 72 –
    73 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    DIA 0.01 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 –
    72 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    HGT 0.08 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 –
    72 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    THK 0.17 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 –
    72 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    CMP 1 MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 63 TO 66 72 –
    73 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 126 TO 129 135 –
    136 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 185 TO 188 194 TO 197 –
    203 TO 206 212 TO 215 221 TO 224 230 TO 233 239 TO 242 248 TO 251 –
    257 TO 260 266 TO 269 275 TO 278 284 TO 287 293 TO 296 302 TO 305 –
    311 TO 314 320 TO 323 329 TO 332 338 TO 341 347 TO 350
    CHECK CODE MEMB 1 TO 12 18 TO 21 27 TO 30 36 TO 39 45 TO 48 54 TO 57 –
    63 TO 66 72 TO 75 81 TO 84 90 TO 93 99 TO 102 108 TO 111 117 TO 120 –
    126 TO 129 135 TO 138 144 TO 147 153 TO 156 162 TO 165 171 TO 174 –
    185 TO 188 194 TO 197 203 TO 206 212 TO 215 221 TO 224 230 TO 233 –
    239 TO 242 248 TO 251 257 TO 260 266 TO 269 275 TO 278 284 TO 287 –
    293 TO 296 302 TO 305 311 TO 314 320 TO 323 329 TO 332 338 TO 341 –
    347 TO 350
    FINISH

    • Hello
      Another way: use Repeat Load as a combination of dead loads including, girder, slab, surfacing, kerbs, median, ect with respective load factors. Then Add this load case (as the repeat load) to Generate the moving loads. Force effects in full girder, provided Physical Member is used, can be viewed graphically by load cases and copied for further processing in Excel.
      Cheers.
      Tuanhai

  3. Dear All

    How do u account for the braking effect of the crane??

  4. HI Sir,

    If I have a moving load such as a truck or car, is it considered as Live Load?
    So, in the load combination, it will get a load factor 1.6 and will be 1.2D+1.6L

    And if I model the slab using plate, will the moving load be imposed to slab first?
    But in my modelling, the arrow that indicated as moving load is imposed on the beams only.
    https://www.dropbox.com/s/r693c0plm59e0f7/StructCWS%201.txt

    and could you help me what are the differences between HS20, HS15, H20 and H15?
    do you have AASHTO that explain about this?
    could you email it to me please?

    Please your kindly advice.
    Thx a lot.

  5. I have a defined a new vehicle by the name ‘TO_Ordinary’ which essentially describes the loading transferred from a train through its several bogies. The vehicle is naturally a convoy vehicle. But somehow STAAD is not recognizing this newly defined vehicle unlike the pre-defined vehicles like HS20 (used above) that are already defined in the vehicle database. What command should I use to implement a self-defined moving convoy load successfully ?

  6. I have a test track that I need to design with a 49 degree superelevation. The wheel loads are moving in the transverse direction. but the beam in transverse direction is inclined and the angle of inclination changes after every 2 mtr change in x-axis. How should I define a moving load to increment on its own? I can do the XINC for x-axis movement but since the wheels will move along non-linearly varying height in y-axis, how is that to be accounted for?

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