One-storey control building

Good day. I'm trying to analyse a one-storey control building with the roof framing system included. I'm getting several warnings in my model and was wondering the significance of each one. Also, there is a note stating something about a load case forming the final mass matrix for dynamic analysis. I'm wondering how that affects the model/analysis as well. Here is the input data for your reference.

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 20-Jun-16
JOB NAME Analysis of MAGELCO Control House
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 0 3.877 0; 3 2 0 0; 4 2 3.877 0; 5 5 0 0; 6 5 3.877 0; 7 0 4.342 0;
8 5 3.966 0; 9 5.913 3.895 0; 10 0.5 3.877 0; 11 1 3.877 0; 12 1.5 3.877 0;
13 2.5 3.877 0; 14 3 3.877 0; 15 3.5 3.877 0; 16 4 3.877 0; 17 4.5 3.877 0;
18 0.5 4.3044 0; 19 0.999997 4.2668 0; 20 1.5 4.2292 0; 21 2 4.1916 0;
22 2.5 4.154 0; 23 3 4.1164 0; 24 3.5 4.0788 0; 25 4 4.0412 0; 26 4.5 4.0036 0;
27 0.601302 4.29678 0; 28 1.2026 4.25156 0; 29 1.80391 4.20635 0;
30 2.40521 4.16113 0; 31 3.00651 4.11591 0; 32 3.60781 4.07069 0;
33 4.20911 4.02548 0; 34 4.81042 3.98026 0; 35 5.41164 3.93399 0; 36 0 0 -4.55;
37 0 3.877 -4.55; 38 2 0 -4.55; 39 2 3.877 -4.55; 40 5 0 -4.55;
41 5 3.877 -4.55; 42 0 4.342 -4.55; 43 5 3.966 -4.55; 44 5.913 3.895 -4.55;
45 0.5 3.877 -4.55; 46 1 3.877 -4.55; 47 1.5 3.877 -4.55; 48 2.5 3.877 -4.55;
49 3 3.877 -4.55; 50 3.5 3.877 -4.55; 51 4 3.877 -4.55; 52 4.5 3.877 -4.55;
53 0.5 4.3044 -4.55; 54 0.999997 4.2668 -4.55; 55 1.5 4.2292 -4.55;
56 2 4.1916 -4.55; 57 2.5 4.154 -4.55; 58 3 4.1164 -4.55; 59 3.5 4.0788 -4.55;
60 4 4.0412 -4.55; 61 4.5 4.0036 -4.55; 62 0.601302 4.29678 -4.55;
63 1.2026 4.25156 -4.55; 64 1.80391 4.20635 -4.55; 65 2.40521 4.16113 -4.55;
66 3.00651 4.11591 -4.55; 67 3.60781 4.07069 -4.55; 68 4.20911 4.02548 -4.55;
69 4.81042 3.98026 -4.55; 70 5.41164 3.93399 -4.55; 71 0 0 -8; 72 0 3.877 -8;
73 2 0 -8; 74 2 3.877 -8; 75 5 0 -8; 76 5 3.877 -8; 77 0 4.342 -8;
78 5 3.966 -8; 79 5.913 3.895 -8; 80 0.5 3.877 -8; 81 1 3.877 -8;
82 1.5 3.877 -8; 83 2.5 3.877 -8; 84 3 3.877 -8; 85 3.5 3.877 -8;
86 4 3.877 -8; 87 4.5 3.877 -8; 88 0.5 4.3044 -8; 89 0.999997 4.2668 -8;
90 1.5 4.2292 -8; 91 2 4.1916 -8; 92 2.5 4.154 -8; 93 3 4.1164 -8;
94 3.5 4.0788 -8; 95 4 4.0412 -8; 96 4.5 4.0036 -8; 97 0.601302 4.29678 -8;
98 1.2026 4.25156 -8; 99 1.80391 4.20635 -8; 100 2.40521 4.16113 -8;
101 3.00651 4.11591 -8; 102 3.60781 4.07069 -8; 103 4.20911 4.02548 -8;
104 4.81042 3.98026 -8; 105 5.41164 3.93399 -8; 106 0 3.877 -2.275;
107 2 3.877 -2.275; 108 5 3.877 -2.275; 109 0 4.342 -2.275; 110 5 3.966 -2.275;
111 5.913 3.895 -2.275; 112 0.5 3.877 -2.275; 113 1 3.877 -2.275;
114 1.5 3.877 -2.275; 115 2.5 3.877 -2.275; 116 3 3.877 -2.275;
117 3.5 3.877 -2.275; 118 4 3.877 -2.275; 119 4.5 3.877 -2.275;
120 0.5 4.3044 -2.275; 121 0.999997 4.2668 -2.275; 122 1.5 4.2292 -2.275;
123 2 4.1916 -2.275; 124 2.5 4.154 -2.275; 125 3 4.1164 -2.275;
126 3.5 4.0788 -2.275; 127 4 4.0412 -2.275; 128 4.5 4.0036 -2.275;
129 0.601302 4.29678 -2.275; 130 1.2026 4.25156 -2.275;
131 1.80391 4.20635 -2.275; 132 2.40521 4.16113 -2.275;
133 3.00651 4.11591 -2.275; 134 3.60781 4.07069 -2.275;
135 4.20911 4.02548 -2.275; 136 4.81042 3.98026 -2.275;
137 5.41164 3.93399 -2.275; 138 0 3.877 -6.05; 139 2 3.877 -6.05;
140 5 3.877 -6.05; 141 0 4.342 -6.05; 142 5 3.966 -6.05; 143 5.913 3.895 -6.05;
144 0.5 3.877 -6.05; 145 1 3.877 -6.05; 146 1.5 3.877 -6.05;
147 2.5 3.877 -6.05; 148 3 3.877 -6.05; 149 3.5 3.877 -6.05; 150 4 3.877 -6.05;
151 4.5 3.877 -6.05; 152 0.5 4.3044 -6.05; 153 0.999997 4.2668 -6.05;
154 1.5 4.2292 -6.05; 155 2 4.1916 -6.05; 156 2.5 4.154 -6.05;
157 3 4.1164 -6.05; 158 3.5 4.0788 -6.05; 159 4 4.0412 -6.05;
160 4.5 4.0036 -6.05; 161 0.601302 4.29678 -6.05; 162 1.2026 4.25156 -6.05;
163 1.80391 4.20635 -6.05; 164 2.40521 4.16113 -6.05;
165 3.00651 4.11591 -6.05; 166 3.60781 4.07069 -6.05;
167 4.20911 4.02548 -6.05; 168 4.81042 3.98026 -6.05;
169 5.41164 3.93399 -6.05; 170 3.00651 4.11591 -8.974;
171 3.60781 4.07069 -8.974; 172 4.20911 4.02548 -8.974;
173 4.81042 3.98026 -8.974; 174 5.41164 3.93399 -8.974;
MEMBER INCIDENCES
334 1 2; 335 3 4; 336 5 6; 337 2 6; 338 2 10; 339 10 11; 340 11 12; 341 12 4;
342 4 13; 343 13 14; 344 14 15; 345 15 16; 346 16 17; 347 17 6; 348 7 18;
349 18 27; 350 27 19; 351 19 28; 352 28 20; 353 20 29; 354 29 21; 355 21 30;
356 30 22; 357 22 23; 358 23 31; 359 31 24; 360 24 32; 361 32 25; 362 25 33;
363 33 26; 364 26 34; 365 34 8; 366 8 35; 367 35 9; 368 7 2; 369 18 10;
370 19 11; 371 20 12; 372 21 4; 373 22 13; 374 23 14; 375 24 15; 376 25 16;
377 26 17; 378 8 6; 379 7 10; 380 18 11; 381 19 12; 382 20 4; 383 21 13;
384 22 14; 385 31 15; 386 24 16; 387 25 17; 388 26 6; 389 36 37; 390 38 39;
391 40 41; 392 37 41; 393 37 45; 394 45 46; 395 46 47; 396 47 39; 397 39 48;
398 48 49; 399 49 50; 400 50 51; 401 51 52; 402 52 41; 403 42 53; 404 53 62;
405 62 54; 406 54 63; 407 63 55; 408 55 64; 409 64 56; 410 56 65; 411 65 57;
412 57 58; 413 58 66; 414 66 59; 415 59 67; 416 67 60; 417 60 68; 418 68 61;
419 61 69; 420 69 43; 421 43 70; 422 70 44; 423 42 37; 424 53 45; 425 54 46;
426 55 47; 427 56 39; 428 57 48; 429 58 49; 430 59 50; 431 60 51; 432 61 52;
433 43 41; 434 42 45; 435 53 46; 436 54 47; 437 55 39; 438 56 48; 439 57 49;
440 66 50; 441 59 51; 442 60 52; 443 61 41; 444 71 72; 445 73 74; 446 75 76;
447 72 76; 448 72 80; 449 80 81; 450 81 82; 451 82 74; 452 74 83; 453 83 84;
454 84 85; 455 85 86; 456 86 87; 457 87 76; 458 77 88; 459 88 97; 460 97 89;
461 89 98; 462 98 90; 463 90 99; 464 99 91; 465 91 100; 466 100 92; 467 92 93;
468 93 101; 469 101 94; 470 94 102; 471 102 95; 472 95 103; 473 103 96;
474 96 104; 475 104 78; 476 78 105; 477 105 79; 478 77 72; 479 88 80;
480 89 81; 481 90 82; 482 91 74; 483 92 83; 484 93 84; 485 94 85; 486 95 86;
487 96 87; 488 78 76; 489 77 80; 490 88 81; 491 89 82; 492 90 74; 493 91 83;
494 92 84; 495 101 85; 496 94 86; 497 95 87; 498 96 76; 499 106 108;
500 106 112; 501 112 113; 502 113 114; 503 114 107; 504 107 115; 505 115 116;
506 116 117; 507 117 118; 508 118 119; 509 119 108; 510 109 120; 511 120 129;
512 129 121; 513 121 130; 514 130 122; 515 122 131; 516 131 123; 517 123 132;
518 132 124; 519 124 125; 520 125 133; 521 133 126; 522 126 134; 523 134 127;
524 127 135; 525 135 128; 526 128 136; 527 136 110; 528 110 137; 529 137 111;
530 109 106; 531 120 112; 532 121 113; 533 122 114; 534 123 107; 535 124 115;
536 125 116; 537 126 117; 538 127 118; 539 128 119; 540 110 108; 541 109 112;
542 120 113; 543 121 114; 544 122 107; 545 123 115; 546 124 116; 547 133 117;
548 126 118; 549 127 119; 550 128 108; 551 138 140; 552 138 144; 553 144 145;
554 145 146; 555 146 139; 556 139 147; 557 147 148; 558 148 149; 559 149 150;
560 150 151; 561 151 140; 562 141 152; 563 152 161; 564 161 153; 565 153 162;
566 162 154; 567 154 163; 568 163 155; 569 155 164; 570 164 156; 571 156 157;
572 157 165; 573 165 158; 574 158 166; 575 166 159; 576 159 167; 577 167 160;
578 160 168; 579 168 142; 580 142 169; 581 169 143; 582 141 138; 583 152 144;
584 153 145; 585 154 146; 586 155 139; 587 156 147; 588 157 148; 589 158 149;
590 159 150; 591 160 151; 592 142 140; 593 141 144; 594 152 145; 595 153 146;
596 154 139; 597 155 147; 598 156 148; 599 165 149; 600 158 150; 601 159 151;
602 160 140; 603 2 106; 604 106 37; 605 37 138; 606 138 72; 607 6 108;
608 108 41; 609 41 140; 610 140 76; 611 7 109; 612 109 42; 613 42 141;
614 141 77; 615 27 129; 616 129 62; 617 62 161; 618 161 97; 619 28 130;
620 130 63; 621 63 162; 622 162 98; 623 29 131; 624 131 64; 625 64 163;
626 163 99; 627 30 132; 628 132 65; 629 65 164; 630 164 100; 631 31 133;
632 133 66; 633 66 165; 634 165 101; 635 101 170; 636 32 134; 637 134 67;
638 67 166; 639 166 102; 640 102 171; 641 33 135; 642 135 68; 643 68 167;
644 167 103; 645 103 172; 646 34 136; 647 136 69; 648 69 168; 649 168 104;
650 104 173; 651 35 137; 652 137 70; 653 70 169; 654 169 105; 655 105 174;
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
334 TO 337 389 TO 392 444 TO 447 499 551 603 TO 610 TABLE ST W6X15
338 TO 367 393 TO 422 448 TO 477 500 TO 529 552 TO 581 TABLE LD L30204
368 TO 388 423 TO 443 478 TO 498 530 TO 550 582 TO 602 TABLE ST L20204
611 TO 655 TABLE ST C6X8
CONSTANTS
MATERIAL STEEL ALL
MEMBER OFFSET
337 392 447 499 551 START 0 -0.075 0
337 392 447 499 551 END 0 -0.075 0
603 607 START 0 -0.075 0
603 607 END 0 -0.075 0
604 608 START 0 -0.075 0
604 608 END 0 -0.075 0
605 609 START 0 -0.075 0
605 609 END 0 -0.075 0
606 610 START 0 -0.075 0
606 610 END 0 -0.075 0
SUPPORTS
1 3 5 36 38 40 71 73 75 FIXED
DEFINE WIND LOAD
TYPE 1 WIND 1
<! STAAD PRO GENERATED DATA DO NOT MODIFY !!!
ASCE-7-2010ARAMS 200.000 KMPH 0 2 1 0 0.000 FT 0.000 FT 0.000 FT 1 -
2 40.000 FT 30.000 FT 25.000 FT 2.000 0.010 0 -
0 0 0 0 1.044 1.000 1.000 0.850 0 -
0 0 0 0.879 0.800 -0.180
!> END GENERATED DATA BLOCK
INT 3.26958 3.26958 3.33354 3.392 3.44592 3.49603 3.5429 3.58696 3.62856 3.668 -
3.70552 3.74131 3.77555 3.80838 3.83993 HEIG 0 4.572 5.15815 5.74431 -
6.33046 6.91662 7.50277 8.08892 8.67508 9.26123 9.84739 10.4335 -
11.0197 11.6059 12.192
EXP 1 JOINT 1 TO 6 36 TO 41 71 TO 76
DEFINE UBC ACCIDENTAL LOAD
ZONE 0.04 I 1 RWX 4.5 RWZ 4.5 STYP 3 NA 0.5 NV 0.5
SELFWEIGHT 1
MEMBER WEIGHT
337 392 447 499 551 603 TO 610 UNI 1.5
LOAD 1 LOADTYPE Seismic TITLE EQX
UBC LOAD X 1
PERFORM ANALYSIS
CHANGE
LOAD 2 LOADTYPE Seismic TITLE EQZ
UBC LOAD Z 1
PERFORM ANALYSIS
CHANGE
LOAD 3 LOADTYPE Dead TITLE DEAD LOAD
SELFWEIGHT Y -1
MEMBER LOAD
611 TO 655 UNI GY -0.75
CALCULATE RAYLEIGH FREQUENCY
LOAD 4 LOADTYPE Live TITLE LIVE LOAD
MEMBER LOAD
337 392 447 499 551 603 TO 610 UNI GY -0.5
LOAD 5 LOADTYPE Wind TITLE WIND LOAD
WIND LOAD X -1 TYPE 1 OPEN
WIND LOAD Z 1 TYPE 1 OPEN
LOAD 6 LOADTYPE None TITLE MODAL CALCULATION
SELFWEIGHT X 1
SELFWEIGHT Y 1
SELFWEIGHT Z 1
MODAL CALCULATION REQUESTED
LOAD COMB 7 COMBINATION LOAD CASE 7
3 1.4
LOAD COMB 8 COMBINATION LOAD CASE 8
3 1.2 4 1.6
LOAD COMB 9 COMBINATION LOAD CASE 9
3 1.2 5 0.8
LOAD COMB 10 COMBINATION LOAD CASE 10
1 1.0 3 1.2 4 0.5
LOAD COMB 11 COMBINATION LOAD CASE 11
2 1.0 3 1.2 4 0.5
LOAD COMB 12 COMBINATION LOAD CASE 12
1 1.0 3 0.9
LOAD COMB 13 COMBINATION LOAD CASE 13
2 1.0 3 0.9
PERFORM ANALYSIS
PARAMETER 1
CODE LRFD
DFF 360 ALL
SELECT ALL
GROUP MEMB 334 TO 337 389 TO 392 444 TO 447 499 551 603 TO 610
GROUP MEMB 338 TO 367 393 TO 422 448 TO 477 500 TO 529 552 TO 581
GROUP MEMB 368 TO 388 423 TO 443 478 TO 498 530 TO 550 582 TO 602
GROUP MEMB 611 TO 655
PERFORM ANALYSIS
PARAMETER 2
CODE LRFD
STEEL TAKE OFF ALL
PARAMETER 3
CODE LRFD
CHECK CODE ALL
FINISH

Thank you in advance for any assistance you may provide.