Montana Department of Transportation (MDT) · 2020 Standard Specifications for Road & Bridge Construction
Section 556 — Steel Structures
Montana 2020 Standard Specifications for Road & Bridge Construction, Section 556. Full text, cross-references and related pay items on BuildSpec.
SECTION 556 STEEL STRUCTURES 556.01 DESCRIPTION This work is the furnishing, fabricating, painting, and erecting of steel structures and the steel structure portions of composite structures. The Department uses 490 pounds per cubic foot (7,850 kg/m3) to calculate the weight of structural steel. The weights of rolled shapes and plates up to and including 36 inches (915 mm) in width are computed based on their nominal weights and dimensions as shown on the shop drawings. One- half of the allowed percentage of overrun in weight as tabulated in ASTM A6 will be added to the nominal weights of…
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