The powers conferred by this part shall be in addition and supplementary to and the limitations by such sections shall not affect the powers conferred by any other general, special or local law. Projects may be undertaken under this part, notwithstanding that any other general, special or local law may provide for the acquisition, construction or lease of projects by municipalities, and without regard to the requirements, restrictions, limitations or other provisions contained in any other general, special or local law.
T.C.A. § 12-2-306