§ 100. Application of article four. The provisions of this article
shall apply to fireproof multiple dwellings erected after April
eighteenth, nineteen hundred twenty-nine, and to such dwellings only.
They shall apply to all such fireproof dwellings unless their
application is expressly limited to dwellings of a particular class.
They shall apply in addition to, and not in substitution for, the
provisions of article three.