uniform load, psf
C= safe concentrated load, pfw
D = deflection, inches
E =modulus of elasticity,29,000,000 psi
F =fiber stress,18,000 psi
Material: ASTM A-569 standard
Defiection: Spans and loads to the right of the bold line exceed 1/4deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer's approval.
Serratet Bars: For serrated grating, the depth of grating required for a specified load is 1/4deeper than stand