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When welded construction is used the owner or his representative shall furnish to the building commissioner a certificate from a laboratory of recognized standing certifying that all welding of all structural members was done under its inspection and meets all requirements of the architect's or structural engineer's design drawings and specifications, and further that all welders were certified by a laboratory of recognized standing.
Upon completion of all structural welding operations, the contractor responsible for the fabrication and erection of the structure shall furnish to the building commissioner a certificate showing that the fabrication and erection of such welded structure, including those welds not inspected by the testing laboratory, have fulfilled the requirements of the architects or structural engineer's design drawings and specifications.
(Prior code § 69-8; Amend Coun. J. 9-13-89, p. 4604); Amend Coun. J. 3-5-03, p. 104990, § 27; Amend Coun. J. 11-13-07, p. 14999, Art. II, § 1)