A Comparative Study of First-Order Reliability Method-Based Steepest Descent Search Directions for Reliability Analysis of Steel Structures

Table 4

Statistical characteristics of random variables for the connection example.

Variable	Description	Mean	Standard deviation	Distribution
(kg)	Applied tensile force	37500	3750	Gumbel
(kg/cm^2)	Yield strength	2400	200	Log-normal
(kg/cm^2)	Ultimate strength	3700	350	Log-normal
(kg/cm^2)	Ultimate strength of bolt	8000	500	Log-normal
(cm^2)	Effective cross section	9.4	0.9	Normal
(cm^2)	Total cross section	13.2	1	Normal
(cm^2)	Area of cross-sectional bolt	3.14	0.3	Normal
(cm^2)	Bearing cross section	1.2	0.1	Normal