Section 3
SEC. 3. Section twelve of Act Numbered Twenty-nine hundred and eighty-five is hereby amended to read as follows: "SEC. 12. It shall be unlawful for any person to practice as engineer or architect or advertise as such without having the proper license as provided by this Act: Provided, however, That all persons who have prior to the approval of Act Numbered Twenty-nine hundred and eighty-five been engaged in the making of plans and direction of work without having an academic title as engineer or architect may continue to do so as maestros de obras, with authority to sign said plans and advertise as such, to which end the Board of Examiners of Architects shall issue a certificate, upon exhibition of the license issued by the Bureau of Internal Revenue prior to the date on which Act Numbered Twenty-nine hundred and eighty-five took effect: Provided, further, That maestros de obras shall not undertake the making of plans for the following classes of works: (a) buildings of more than two stories; (b) buildings of concrete, whether reinforced or not; (c) buildings with frames of manufactured steel; (d) buildings or structures intended for public gatherings or assemblies, such as theaters, cinematographs, stadiums, churches, and other structures of a like nature, unless such buildings or structures are of "mixed materials" or lumber: Provided, further, That maestros de obras shall not direct or execute the constructions specified in subsections (&) and (c) of this section: Provided, finally, That none of the provisions of this Act shall be construed to prevent any person from making constructions or buildings other than those covered by subsections (b), (c), and (d)."