N.Y.C. Admin. Code § 28-410.7.5: § 28-410.7.5 Joint ventures.

Nothing contained in this section 28-410.7 shall be construed to prevent a master fire suppression piping contractor business from entering into a joint venture of limited duration for a particular project with another master fire suppression piping contractor business. The terms of a joint venture must be in writing, and documentation of the joint venture must be submitted to the department for approval prior to the initiation of work under such venture.