Determination of Modelling Error Statistics for Cold-Formed Steel Columns
Table 6
Statistical properties of modelling error of test database compression members.
Design standard
Statistical property
Compression members & failure modes
Columns
Stub columns
Flexural buckling
Flexure- torsion buckling
Local buckling
Distortion buckling
Yielding
Local buckling
Distortion buckling
ASCE 10-15
Number of specimens from database critical in Failure mode
Nos@
14
33
10
Failure mode not available in this standard
27
10
Failure mode not considered in this standard
Mean
0.899
1.154
0.915
1.108
0.969
COV
0.150
0.257
0.132
0.082
0.043
SK
2.018
1.934
0.962
0.476
−0.388
CU
8.131
5.828
2.659
2.238
2.566
AISI S100-16 & AS/NZS 4600:2018
Number of specimens from database critical in Failure mode
Nos@
14
34
23
40
17
32
42
Mean
0.870
1.198
0.821
1.338
1.017
0.884
0.951
COV
0.149
0.262
0.164
0.279
0.081
0.049
0.091
SK
2.331
1.864
1.036
0.155
−0.228
1.669
0.134
CU
9.550
5.544
4.034
1.813
2.289
9.465
4.677
EN 1993-1-3: 2006
Number of specimens from database critical in Failure mode
Nos@
39
57
3
0
74
Mean
0.942
1.225
1.113
—
1.024
COV
0.227
0.289
0.012
—
0.120
SK
0.810
1.229
−1.682
—
0.147
CU
2.325
3.661
—
—
3.584
@Number of Specimens from the test database critical in particular failure mode. EN 1993-1-3:2006 considers combined failure mode as local and distortion buckling.
