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

Table 2

Statistical characteristics of random variables for the example of column.

Variable	Description	Mean	Standard deviation	Distribution
(kg)	Axial force	70000	8000	Gumbel
(cm^2)	Area of cross section	65.3	5	Normal
(kg/cm^2)	Yield strength	2400	200	Log-normal
(kg/cm^2)	Modulus of elasticity			Gumbel
(cm^4)	Second moment of inertia	1360	136	Log-normal
	Effective length factor	0.7	0.12	Log-normal
(cm)	Length of column	500	70	Normal