Why is my result showing compression forces for Tension Only members? I am using REPEAT LOAD command instead of LOAD COMB.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 07-Apr-17
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 2.584 0 0; 2 25.167 0 0; 3 50 0 0; 4 75 0 0; 5 2.584 0 20; 6 25.167 0 20;
7 50 0 20; 8 75 0 20; 9 2.584 21.67 0; 10 25.167 21.67 0; 11 50 21.67 0;
12 75 21.67 0; 13 2.584 20 20; 14 25.167 20 20; 15 50 20 20; 16 75 20 20;
21 90 0 0; 22 90 0 20; 23 90 21.67 0; 24 90 20 20;
MEMBER INCIDENCES
1 1 9; 2 5 13; 3 2 10; 4 6 14; 5 3 11; 6 7 15; 7 4 12; 8 8 16; 9 9 13;
10 10 14; 11 11 15; 12 12 16; 13 9 10; 14 10 11; 15 11 12; 17 14 15; 29 21 23;
30 22 24; 31 23 24; 32 12 23; 33 16 24; 46 13 14; 47 15 16; 48 21 12; 49 4 23;
50 8 24; 51 22 16;
START USER TABLE
TABLE 1
UNIT FEET KIP
PIPE
ROD
0.0417 0.001 0.0014 0.0014
END
SUPPORTS
1 TO 8 21 22 PINNED
MEMBER RELEASE
13 TO 15 17 32 33 46 47 START MPX 0.99 MPY 0.99 MPZ 0.99
13 TO 15 17 32 33 46 47 END MPY 0.99 MPZ 0.99
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TO 8 29 30 TABLE ST W12X40
9 TO 12 31 TABLE ST W12X40
13 TO 15 17 32 33 46 47 TABLE ST W8X24
MEMBER PROPERTY AMERICAN
48 TO 51 UPTABLE 1 ROD
CONSTANTS
BETA 90 MEMB 1 TO 8 29 30
MATERIAL STEEL ALL
MEMBER TENSION
48 TO 51
DEFINE WIND LOAD
TYPE 1 WIND 1
<! STAAD PRO GENERATED DATA DO NOT MODIFY !!!
ASCE-7-2010:PARAMS 115.000 MPH 0 1 1 0 0.000 FT 0.000 FT 0.000 FT 1 -
2 20.000 FT 20.000 FT 90.000 FT 2.000 0.010 0 -
0 0 0 0 0.624 1.000 1.000 0.850 0 -
0 0 0 0.847 0.800 -0.180
!> END GENERATED DATA BLOCK
INT 0.0144386 0.0144386 0.0145199 0.0145998 0.0146784 0.0147556 0.0148315 -
0.0149062 0.0149798 0.0150522 0.0151235 0.0151938 0.015263 0.0153313 0.0153986 -
HEIG 0 15 15.3846 15.7692 16.1539 16.5385 16.9231 17.3077 17.6923 -
18.0769 18.4615 18.8461 19.2308 19.6154 20
LOAD 1 LOADTYPE None TITLE DL + COLLATERAL (2PSF + 5PSF)
JOINT LOAD
9 13 FY -0.24
10 14 FY -0.41
11 15 FY -0.44
12 16 FY -0.35
23 24 FY -0.13
MEMBER LOAD
9 CON GY -0.47 5
10 CON GY -0.83 5
11 CON GY -0.87 5
12 CON GY -0.7 5
31 CON GY -0.26 5
9 CON GY -0.47 10
10 CON GY -0.83 10
11 CON GY -0.87 10
12 CON GY -0.7 10
31 CON GY -0.26 10
9 CON GY -0.47 15
10 CON GY -0.83 15
11 CON GY -0.87 15
12 CON GY -0.7 15
31 CON GY -0.26 15
SELFWEIGHT Y -1
LOAD 2 LOADTYPE None TITLE LL
JOINT LOAD
9 13 FY -0.68
10 14 FY -1.19
11 15 FY -1.25
12 16 FY -1
23 24 FY -0.38
MEMBER LOAD
9 CON GY -1.35 5
10 CON GY -2.37 5
11 CON GY -2.49 5
12 CON GY -2 5
31 CON GY -0.75 5
9 CON GY -1.35 10
10 CON GY -2.37 10
11 CON GY -2.49 10
12 CON GY -2 10
31 CON GY -0.75 10
9 CON GY -1.35 15
10 CON GY -2.37 15
11 CON GY -2.49 15
12 CON GY -2 15
31 CON GY -0.75 15
LOAD 3 LOADTYPE None TITLE WLZ
JOINT LOAD
5 13 FZ -0.54
6 14 FZ -0.94
7 15 FZ -0.99
8 16 FZ -0.8
22 24 FZ -0.3
21 TO 24 FX 0.36
1 5 9 13 FX -0.36
MEMBER LOAD
2 CON GZ -1.1 5
4 CON GZ -1.9 5
6 CON GZ -2 5
8 CON GZ -1.6 5
30 CON GZ -0.6 5
29 30 CON GX 0.72 5
1 2 CON GX -0.72 5
2 CON GZ -1.1 10
4 CON GZ -1.9 10
6 CON GZ -2 10
8 CON GZ -1.6 10
30 CON GZ -0.6 10
29 30 CON GX 0.72 10
1 2 CON GX -0.72 10
2 CON GZ -1.1 15
4 CON GZ -1.9 15
6 CON GZ -2 15
8 CON GZ -1.6 15
30 CON GZ -0.6 15
29 30 CON GX 0.72 15
1 2 CON GX -0.72 15
LOAD 4 LOADTYPE None TITLE WLX
JOINT LOAD
1 5 9 13 FX 0.41
21 TO 24 FX 0.17
5 13 FZ 0.5
6 14 FZ 0.88
7 15 FZ 0.92
8 16 FZ 0.74
22 24 FZ 0.28
MEMBER LOAD
1 2 CON GX 0.82 5
29 30 CON GX 0.33 5
1 2 CON GX 0.82 10
29 30 CON GX 0.33 10
1 2 CON GX 0.82 15
29 30 CON GX 0.33 15
2 CON GZ 1 5
4 CON GZ 1.75 5
6 CON GZ 1.84 5
8 CON GZ 1.48 5
30 CON GZ 0.56 5
2 CON GZ 1 10
4 CON GZ 1.75 10
6 CON GZ 1.84 10
8 CON GZ 1.48 10
30 CON GZ 0.56 10
2 CON GZ 1 15
4 CON GZ 1.75 15
6 CON GZ 1.84 15
8 CON GZ 1.48 15
30 CON GZ 0.56 15
LOAD 5 LOADTYPE None TITLE -WLX
JOINT LOAD
1 5 9 13 FX -0.41
21 TO 24 FX -0.17
5 13 FZ 0.5
6 14 FZ 0.88
7 15 FZ 0.92
8 16 FZ 0.74
22 24 FZ 0.28
MEMBER LOAD
1 2 CON GX -0.82 5
29 30 CON GX -0.33 5
1 2 CON GX -0.82 10
29 30 CON GX -0.33 10
1 2 CON GX -0.82 15
29 30 CON GX -0.33 15
2 CON GZ 1 5
4 CON GZ 1.75 5
6 CON GZ 1.84 5
8 CON GZ 1.48 5
30 CON GZ 0.56 5
2 CON GZ 1 10
4 CON GZ 1.75 10
6 CON GZ 1.84 10
8 CON GZ 1.48 10
30 CON GZ 0.56 10
2 CON GZ 1 15
4 CON GZ 1.75 15
6 CON GZ 1.84 15
8 CON GZ 1.48 15
30 CON GZ 0.56 15
LOAD 6 LOADTYPE None TITLE WL ROOF UPLIFT
JOINT LOAD
9 13 FY 0.82
10 14 FY 1.45
11 15 FY 1.52
12 16 FY 1.22
23 24 FY 0.46
MEMBER LOAD
9 CON GY 1.65 5
10 CON GY 2.89 5
11 CON GY 3.04 5
12 CON GY 2.44 5
31 CON GY 0.92 5
9 CON GY 1.65 10
10 CON GY 2.89 10
11 CON GY 3.04 10
12 CON GY 2.44 10
31 CON GY 0.92 10
9 CON GY 1.65 15
10 CON GY 2.89 15
11 CON GY 3.04 15
12 CON GY 2.44 15
31 CON GY 0.92 15
LOAD 101 D+LLR
REPEAT LOAD
1 1.0 2 1.0
LOAD 102 DL+0.6WZ
REPEAT LOAD
1 1.0 3 0.6
LOAD 103 DL+0.6WX
REPEAT LOAD
1 1.0 4 0.6
LOAD 104 DL-0.6WX
REPEAT LOAD
1 1.0 5 0.6
LOAD 105 DL+0.75LLR+0.75(0.6WZ)
REPEAT LOAD
1 1.0 2 0.75 3 0.45
LOAD 106 DL+0.75LLR+0.75(0.6WX)
REPEAT LOAD
1 1.0 2 0.75 4 0.45
LOAD 107 DL+0.75LLR-0.75(0.6WX)
REPEAT LOAD
1 1.0 2 0.75 5 0.45
LOAD 108 0.6D+0.6WZ
REPEAT LOAD
1 0.6 3 0.6 6 0.6
LOAD 109 0.6D+0.6WX
REPEAT LOAD
1 0.6 4 0.6 6 0.6
LOAD 110 0.6D-0.6WX
REPEAT LOAD
1 0.6 5 0.6 6 0.6
PERFORM ANALYSIS
LOAD LIST 101 TO 110
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD ASD
FU 9360 MEMB 1 TO 15 17 29 TO 33 46 47
FYLD 7200 MEMB 1 TO 15 17 29 TO 33 46 47
***DISREGARD SLENDERNESS CHECK***
TMAIN 10000 ALL
CHECK CODE ALL
FINISH