Looks like this SET WARP command is generating some error in the analysis when the members are graphically copied.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 10-May-18
END JOB INFORMATION
INPUT WIDTH 79
SET WARP 0.9
UNIT FEET POUND
JOINT COORDINATES
1 0 0 0; 2 10 0 0; 3 5 0 0; 4 5 0 2; 5 0 0 -10; 6 10 0 -10; 7 5 0 -10;
8 5 0 -8; 9 -15 0 0; 10 -5 0 0; 11 -10 0 0; 12 -10 0 2; 13 -15 0 -10;
14 -5 0 -10; 15 -10 0 -10; 16 -10 0 -8;
MEMBER INCIDENCES
1 1 3; 2 3 2; 3 3 4; 4 5 7; 5 7 6; 6 7 8; 7 9 11; 8 11 10; 9 11 12; 10 13 15;
11 15 14; 12 15 16;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+009
POISSON 0.3
DENSITY 489.024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5.184e+006 FU 8.352e+006 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TO 12 TABLE ST W5X19
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 2 5 6 9 10 13 14 FIXED
LOAD 1 LOADTYPE Dead TITLE LOAD CASE 1
SELFWEIGHT Y -1
LOAD 2 LOADTYPE Live TITLE LOAD CASE 2
JOINT LOAD
4 8 12 16 FY -100
LOAD COMB 3 COMBINATION LOAD CASE 3
1 1.0 2 1.0
PERFORM ANALYSIS
PARAMETER 1
CODE AISC UNIFIED 2005
LY 10 MEMB 1 2 4 5 7 8 10 11
LZ 10 MEMB 1 2 4 5 7 8 10 11
UNB 10 MEMB 1 2 4 5 7 8 10 11
UNT 10 MEMB 1 2 4 5 7 8 10 11
CHECK CODE ALL
PARAMETER 2
CODE AISC
LY 10 MEMB 1 2 4 5 7 8 10 11
LZ 10 MEMB 1 2 4 5 7 8 10 11
UNB 10 MEMB 1 2 4 5 7 8 10 11
UNT 10 MEMB 1 2 4 5 7 8 10 11
TORSION 1 MEMB 1 2 4 5 7 8 10 11
CHECK CODE ALL
FINISH
****************************************************
* *
* STAAD.Pro V8i SELECTseries4 *
* Version 20.07.09.21 *
* Proprietary Program of *
* Bentley Systems, Inc. *
* Date= MAY 10, 2018 *
* Time= 13:38:17 *
