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BUILDING AND STRUCTURES FORMULAS 231
FIGURE 9.7 Typical compression elements used in light-
weight steel construction. (Merritt–Building Construction
Handbook, McGraw-Hill.)
For safe-load determinations, that is, in computing effective area and section
modulus
b 8,040 2,010
1 (9.83)
t f (w/t) f
where f unit stress in psi in the element computed on basis of reduced section,
psi (MPa)
w width of the element, in (mm)
t thickness, in (mm)
