Table 3: Uncertainty of calculation method of cold-formed thin-walled steel members.

Grade Member type Number Uncertainty of calculation method KP
Mean Variation coefficient
LG550 B axially-compressed members 15 1.1073 0.1675
C 48 1.1440 0.1662
B eccentrically-compressed members 13 0.9615 0.2928
C 35 1.0977 0.1973
S350 axially-compressed members 26 1.0769 0.1084
eccentrically-compressed members 33 1.1307 0.1533
S280 axially-compressed members 19 1.0555 0.0565
eccentrically-compressed members 56 1.2363 0.1252