Section 27-616. Quality control

(a) Reference. The provisions of tables 10-1
  and 10-2 shall apply.
    (b) Welding operations.
    (1)  Welding work shall be performed only by persons who have obtained
  a license from the commissioner.
    (2) Where manual welding work is not performed  in  the  city  of  New
  York,  welds  shall be made by welders qualified under the provisions of
  appendix D, parts II and III, of the AWS code for  welding  in  building
  construction.  Qualification with any of the steels permitted by the AWS
  code shall be considered as qualification  to  weld  any  of  the  other
  steels permitted by the code.
    (3)  Tack  welds,  which  are  later  incorporated into finished welds
  carrying calculated stress, shall not be considered as structural welds.
    (4) The inspection of welding  operations  stipulated  in  table  10-2
  shall include a check to ascertain that the welders employed on the work
  have  the  required  license  or  who  are  qualified in accordance with
  paragraph two of this subdivision.