only on the ultimate stress of the material

only on the yield stress of the material

only on the geometry of the section

both on the yield stress and ultimate stress of material

equilibrium and mechanism conditions

equilibrium and plastic moment conditions

mechanism and plastic moment conditions

equilibrium condition only

equilibrium and mechanism conditions

equilibrium and plastic moment conditions

mechanism and plastic moment conditions

equilibrium condition only

always equal to factor of safety

always less than factor of safety

always greater than factor of safety

sometimes greater than factor of safety

is equal to 1

is always less than 1

is always greater than 1

can be less than 1