Alternative materials, methods and equipment. The provisions of this
code are not intended to prevent the installation of any material
or to prohibit any method of construction not specifically prescribed
by this code, provided that any such alternative has been approved.
An alternative material or method of construction shall be approved
where the Building Code Official finds that the proposed design is
satisfactory and complies with the intent of the provisions of this
code, and that the material, method or work offered is, for the purpose
intended, at least the equivalent of that prescribed in this code
in quality, strength, effectiveness, fire resistance, durability and
safety. Where the alternative material, design or method of construction
is not approved, the Building Code Official shall respond, in writing,
stating the reasons the alternative was not approved.