AISC LRFD 1.pdf

Sect. M4.] ERECTION 83(2) Bottom surfaces of bearing plates and column bases which are grouted toensure full bearing contact on foundations need not be milled.(3) Top surfaces of bearing plates need not be milled when completejoint-penetrationgroove welds are provided between the column and the bearingplate.M3. SHOP PAINTING1. General RequirementsShop painting and surface preparation shall be in accordance with the provisions ofthe AISC Code of Standard Practice.Shop paint is not required unless specified by the contract documents.2. Inaccessible SurfacesExcept for contact surfaces, surfaces inaccessible after shop assembly shall becleaned and painted prior to assembly, if required by the design documents.3. Contact SurfacesPaint is permitted unconditionally in bearing-type connections. For slip-criticalconnections, the faying surface requirements shall be in accordance with the RCSCSpecification for Structural Joints Using ASTM A325 or A490 Bolts, paragraph3(b).4. Finished SurfacesMachine-finished surfaces shall be protected against corrosion by a rust inhibitivecoating that can be removed prior to erection, or which has characteristics that makeremoval prior to erection unnecessary.5. Surfaces Adjacent to Field WeldsUnless otherwise specified in the design documents, surfaces within two in. (50mm) of any field weld location shall be free of materials that would prevent properwelding or produce objectionable fumes during welding.M4. ERECTION1. Alignment of Column BasesColumn bases shall be set level and to correct elevation with full bearing on concreteor masonry.2. BracingThe frame of steel skeleton buildings shall be carried up true and plumb within thelimits defined in the AISC Code of Standard Practice. Temporary bracing shall beprovided, in accordance with the requirements of the Code of Standard Practice,wherever necessary to support all loads to which the structure may be subjected,including equipment and the operation of same. Such bracing shall be left in placeas long as required for safety.LRFD Specification for Structural Steel Buildings, December 27, 1999AMERICAN INSTITUTE OF STEEL CONSTRUCTION