Minnesota Department of Transportation (MnDOT) · 2025 Standard Specifications for Construction
Section 3321 — Gray Iron Castings
Minnesota 2025 Standard Specifications for Construction, Section 3321. Full text, cross-references and related pay items on BuildSpec.
3321 GRAY IRON CASTINGS 3321.1 SCOPE Provide gray iron castings for drainage or structural use. The castings are classified according to tensile strength, but the Department will make provisions for acceptance of drainage castings and other ornamental or non-stress bearing castings on the basis of flexural tests. 3321.2 REQUIREMENTS Provide gray iron castings meeting the requirements of AASHTO M 105 Standard Specification for Gray Iron Castings, for the class required by the Contract. Obtain the castings from foundries, approved by the Materials Engineer, in accordance with these…
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