scope:

The NAAMM Welding Standards for Fabrication of Steel, Stainless Steel and Aluminum Bar Grating provide architects and engineers with current technical data on bar grating and stair treads. The information contained is based on sound engineering principles and reflects practices recommended by leading manufacturers in the industry.

The first three editions of the manual have been widely used by design professional. In preparing this fourth edition, the Metal Bar Grating Division of NAAMM has reviewed its contents in detail and has made revisions to reflect current practices.

Changes from the previous edition, ANSI/NAAMM MBG 533-09 are indicated by the placement of a vertical line next to the changed item.