TABLE 10.6 Maximum Width /Thickness Ratios b/tafor Compression Elements for Highway Bridgesb
Load-and-resistance-factor designc
Description of element Compact Noncompactd
Flange projection of rolled or
fabricated I-shaped beams
Webs in flexural compression 150
Allowable-stress designf
fa0.44Fy
Description of element fa0.44Fy Fy36 ksi (248 MPa) Fy50 ksi (344.5 MPa)
Plates supported in one side and
outstanding legs of angles
In main members 12 11
51
wfa 12
608
2 Fy
70 e
2 Fy
65
2 Fy
264