Sec. 2.5. As used in this chapter, "industry engineering standards" includes the following:
(1) Lifecycle costing.
(2) The R. S. Means estimating method developed by the R. S. Means Company.
(3) Historical data.
(4) Manufacturer's data.
(5) American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) standards.