M3Shop painting

M3.1 General Requirements

Shop painting and surface preparation shall be in accordance with the provisions in Code of Standard Practice Section 6.

Shop paint is not required unless specified by the contract documents.

M3.2 Inaccessible Surfaces

Except for contact surfaces, surfaces inaccessible after shop assembly shall be cleaned and painted prior to assembly, if required by the construction documents.

M3.3 Contact Surfaces

Paint is permitted in bearing-type connections. For slip-critical connections, the faying surface requirements shall be in accordance with RCSC Specification Section 3.2.2.

M3.4 Finished Surfaces

Machine-finished surfaces shall be protected against corrosion by a rust inhibitive coating that can be removed prior to erection or has characteristics that make removal prior to erection unnecessary.

M3.5 Surfaces Adjacent to Field Welds

Unless otherwise specified in the design documents, surfaces within 2 in. (50 mm) of any field weld location shall be free of materials that would prevent weld quality from meeting the quality requirements of this Specification or produce unsafe fumes during welding.