As used in this article, the term:
There may also be included, as part of the cost of a project, the repayment of any loans made for the advance payment of any part of such cost, including interest thereon at rates to be determined by the authority, which loans are authorized if made payable solely from the proceeds of the authority's bonds or notes or revenues to be received in connection with the leasing, sale, or financing of the project. The cost of a project may also include a fund or funds for the creation of a debt service reserve, a renewal and replacement reserve, and such other reserves as may be reasonably required by the authority with respect to the financing and operation of any project and as may be authorized by any bond resolution or trust agreement or indenture pursuant to the provisions of which the issuance of any such bonds may be authorized. Any obligation or expense incurred for any of the foregoing purposes shall be paid or reimbursed as a part of the cost of the project out of the proceeds of revenue bonds or notes issued under this article.
OCGA § 31-7-112