Aluminum for structural elements shall at all times in the fabricator's plant, be marked, segregated, or otherwise handled so that the separate alloys and tempers are positively identified, and after completion of fabrication shall be marked to identify the alloy and temper. Such markings shall be affixed to completed members and assemblies or to boxed or bundled shipments of multiple units prior to shipment from the fabricator's plant.
Welding operations performed on aluminum used for structural purposes shall comply with the following:
- The provisions of AWS D1.2.
- Welding work shall be performed only by persons who have obtained a license from the commissioner. Where manual welding work on structural members is not performed in the City of New York, welds shall be made by welders certified by the American Welding Society in accordance with AWS D1.2.