In the absence of approved rules or other approved standards, the building official shall make, or cause to be made, the necessary tests and
investigations; or the building official shall accept duly authenticated reports from approved agencies in respect to the quality and manner of
use of new materials or assemblies as provided for in Section A-203.0 of the Administrative Code. The cost of all tests and other investigations
required under the provisions of this code shall be borne by the permit applicant.