N.Y.C. Admin. Code § 27-628: § 27-628 Erection.

(a) Bracing. All framework shall be carried up true and plumb. Temporary bracing shall be provided to support all loads imposed upon the framework during construction that are in excess of those for which the framework was designed.

(b) Temporary connections. As erection progresses, the work shall be securely bolted, or welded, to resist all dead loads, wind, and erection stresses.

(c) Alignment. The structure shall be properly aligned before riveting, permanent bolting, or welding is performed.