(a) Whenever there is insufficient evidence that any material or construction authorized by OBBC or this Building Code conforms to the requirements of this Building Code, or that any material or construction authorized or approved by the Board of Building Standards and Building Appeals conforms to the terms of authorization or approval given by the Board, the Commissioner may require tests as proof of compliance to be made at the expense of the owner by an approved agency.
(b) Tests shall be made in accordance with generally recognized standards for the material or construction in question, but in the absence of such standards the Board shall specify the test procedure. Duly authenticated tests by a competent person or laboratory may be accepted by the Commissioner in lieu of tests made under the Commissioner’s supervision.
(c) Copies of the results of all such tests shall be kept on file in the office of the Commissioner for a period of not less than five (5) years after the acceptance of the structure or materials or assembly of materials.
(d) The Commissioner may require tests to be repeated if at any time there is reason to believe that the material or construction no longer conforms to the requirements on which its approval was based.