Disjointed Structures

Good day, I would like to ask for assistance regarding my disjointed model. I would like to model and analyse the structure as seen in its 3D rendered view.

Here are the inputs as per the editor.

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 14-Jun-16
END JOB INFORMATION
INPUT WIDTH 79
UNIT MMS KN
JOINT COORDINATES
1 0 0 0; 2 4000 0 0; 3 0 2560 0; 4 4000 2560 0; 5 200 2560 200;
6 200 2560 -200; 7 -200 2560 200; 8 -200 2560 -200; 13 0 2560 400;
15 0 2560 -400; 18 -570 2560 0; 19 4570 2560 0; 20 4000 2560 400;
21 4000 2560 -400; 26 4200 2560 200; 27 4200 2560 -200; 28 3800 2560 200;
29 3800 2560 -200;
MEMBER INCIDENCES
2 1 3; 3 2 4; 71 15 13; 72 21 20; 73 18 19;
ELEMENT INCIDENCES SHELL
22 8 6 5 7; 42 29 27 26 28;
ELEMENT PROPERTY
22 42 THICKNESS 16
DEFINE MATERIAL START
ISOTROPIC STEEL
E 205
POISSON 0.3
DENSITY 7.68195e-008
ALPHA 1.2e-005
DAMP 0.03
TYPE STEEL
STRENGTH FY 0.2532 FU 0.4078 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
2 3 TABLE ST HSSP8.625X0.188
71 72 TABLE D C4X7 SP 247
73 TABLE D C4X7 SP 587
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 2 PINNED
MEMBER OFFSET
71 START 0 58.7995 0
71 END 0 58.7995 0
72 START 0 58.7995 0
72 END 0 58.7995 0
73 START 0 160.4 0
73 END 0 160.4 0
LOAD 1 LOADTYPE Dead TITLE DEAD
SELFWEIGHT Y -1 LIST ALL
MEMBER LOAD
73 CON GY -6.8 120
73 CON GY -6.8 2570
73 CON GY -6.8 5020
LOAD 2 LOADTYPE Wind TITLE WIND +X
MEMBER LOAD
2 3 TRAP GX 0 1.37 0 2560
LOAD 3 LOADTYPE Wind TITLE WIND +Z
MEMBER LOAD
2 3 TRAP GZ 0 1.37 0 2560
73 UNI GZ 1.37 0 5140
LOAD 4 LOADTYPE Wind TITLE WIND +X +Z
MEMBER LOAD
2 3 TRAP GX 0 1.37 0 2560
2 3 TRAP GZ 0 1.37 0 2560
73 UNI Z 1.37 0 5140
LOAD 5 LOADTYPE Wind TITLE WIND +X -Z
MEMBER LOAD
2 3 TRAP GX 0 1.37 0 2560
2 3 TRAP GZ 0 -1.37 0 2560
73 UNI GZ -1.37 0 5140
LOAD 6 LOADTYPE Wind TITLE WIND -X +Z
MEMBER LOAD
2 3 TRAP GX 0 -1.37 0 2560
2 3 TRAP GZ 0 1.37 0 2560
LOAD 7 LOADTYPE Wind TITLE WIND -X -Z
MEMBER LOAD
2 3 TRAP GX 0 -1.37 0 2560
2 3 TRAP GZ 0 -1.37 0 2560
LOAD COMB 8 COMBINATION LOAD CASE 8
1 1.2 2 1.6
LOAD COMB 9 COMBINATION LOAD CASE 9
1 1.2 3 1.6
LOAD COMB 10 COMBINATION LOAD CASE 10
1 1.2 4 1.6
LOAD COMB 11 COMBINATION LOAD CASE 11
1 1.2 5 1.6
LOAD COMB 12 COMBINATION LOAD CASE 12
1 1.2 6 1.6
LOAD COMB 13 COMBINATION LOAD CASE 13
1 1.2 7 1.6
PERFORM ANALYSIS
PARAMETER 1
CODE AISC UNIFIED 2010
CHECK CODE MEMB 2 3
FINISH

Thank you all in advance for any assistance you may provide.