select series 6 is giving different design ratio than select series 5. I am attaching the staad input file can any one can help me in this regard.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 02-Mar-16
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
2 0 0 -3; 3 0 0 -6; 4 0 0 -9; 5 0 0.93 0; 6 0 0.93 -3; 7 0 0.93 -6;
8 0 0.93 -9; 9 -0.35 0.93 0; 10 -0.35 0.93 -3; 11 -0.35 0.93 -6;
12 -0.35 0.93 -9; 13 0.35 0.93 0; 14 0.35 0.93 -3; 15 0.35 0.93 -6;
16 0.35 0.93 -9; 19 0.35 0 0.375; 20 0.35 0.93 0.375; 21 0.35 0.93 0.75;
22 -2.3 0.93 0; 23 -2.3 0 0.375; 24 -2.3 0.93 0.375; 25 -2.3 0.93 0.75;
MEMBER INCIDENCES
2 2 6; 3 3 7; 4 4 8; 5 12 8; 6 8 16; 7 11 7; 8 7 15; 9 10 6; 10 6 14; 11 9 5;
12 5 13; 13 12 11; 14 11 10; 15 10 9; 16 13 14; 17 14 15; 18 15 16; 20 19 20;
21 20 13; 22 21 20; 23 23 24; 24 24 22; 25 25 24; 26 25 21; 27 22 9;
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 INDIAN
2 TO 4 20 23 TABLE FR ISMC100
5 TO 18 21 22 24 TO 27 TABLE ST ISMC150
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
2 TO 4 19 23 FIXED
MEMBER RELEASE
13 TO 18 26 27 START MY MZ
12 TO 18 26 END MY MZ
LOAD 1 LOADTYPE Dead TITLE DEAD LOAD
SELFWEIGHT Y -1
MEMBER LOAD
13 TO 18 UNI GY -0.525
5 6 11 TO 18 UNI GY -1
LOAD 2 LOADTYPE Live TITLE LIVE LOAD
MEMBER LOAD
13 TO 18 UNI GY -0.875
LOAD 3 LOADTYPE Dead TITLE LOAD CASE 3
REPEAT LOAD
1 1.5 2 1.5
PERFORM ANALYSIS
DEFINE ENVELOPE
1 2 ENVELOPE 1 TYPE SERVICEABILITY
END DEFINE ENVELOPE
PARAMETER 1
CODE IS800 LSD
BEAM 1 ALL
KX 2 MEMB 2 TO 10 20 TO 25
KY 2 MEMB 2 TO 10 20 TO 25
KZ 2 MEMB 2 TO 10 20 TO 25
LX 2.65 MEMB 11 12 27
LY 2.65 MEMB 11 12 27
LZ 2.65 MEMB 11 12 27
MAIN 700 ALL
RATIO 1 ALL
TRACK 2 ALL
LOAD LIST 3
CHECK CODE ALL
*PARAMETER 2
*CODE IS800 LSD
*BEAM 1 ALL
*MAIN 700 ALL
*DFF 200 ALL
*DJ1 8 MEMB 5
*DJ2 12 MEMB 5
*DJ1 8 MEMB 6
*DJ2 16 MEMB 6
*DJ1 7 MEMB 7
*DJ2 11 MEMB 7
*DJ1 7 MEMB 8
*DJ2 15 MEMB 8
*DJ1 6 MEMB 9
*DJ2 10 MEMB 9
*DJ1 6 MEMB 10
*DJ2 14 MEMB 10
*DJ1 5 MEMB 11
*DJ2 9 MEMB 11
*DJ1 22 MEMB 11 12 27
*DJ2 13 MEMB 11 12 27
*DJ1 4 MEMB 4
*DJ2 8 MEMB 4
*DJ1 3 MEMB 3
*DJ2 7 MEMB 3
*DJ1 2 MEMB 2
*DJ2 6 MEMB 2
*DJ1 23 MEMB 23
*DJ2 24 MEMB 23
*DJ1 12 MEMB 13
*DJ2 11 MEMB 13
*DJ1 11 MEMB 14
*DJ2 10 MEMB 14
*DJ1 10 MEMB 15
*DJ2 9 MEMB 15
*DJ1 16 MEMB 18
*DJ2 15 MEMB 18
*DJ1 14 MEMB 16
*DJ2 13 MEMB 16
*DJ1 15 MEMB 17
*DJ2 14 MEMB 17
*DJ1 19 MEMB 20
*DJ2 20 MEMB 20
*DJ1 20 MEMB 21
*DJ2 13 MEMB 21
*DJ1 20 MEMB 22
*DJ2 21 MEMB 22
*DJ1 24 MEMB 24
*DJ2 22 MEMB 24
*DJ1 24 MEMB 25
*DJ2 25 MEMB 25
*DJ1 25 MEMB 26
*DJ2 21 MEMB 26
*RATIO 1 ALL
*LOAD LIST ENV 1
*CHECK CODE ALL
FINISH