Geometric Constraints
Minimum flange width is 0.25
D
, where D
= web depth, but not less than 15 in.Minimum flange thickness is 1 in
Minimum web thickness is 0.50 in.
Minimum stiffener thickness used to connect cross frames or diaphragms to girder is 0.50 in.
Satisfy the span-to-depth ratios in Article 2.5.2.6.3 as a minimum, unless vertical clearance constraints demand a shallower superstructure.