Where supporting data is necessary, what must be present to assist in the approval of materials or assemblies not specifically provided for in the code?

The presence of research reports is crucial when it comes to the approval of materials or assemblies that are not specifically addressed in the building code. Research reports typically provide independent, third-party evaluations that validate the performance and suitability of the materials in various applications. These documents usually include data from tests conducted under controlled conditions, which can affirm that a material or assembly meets performance standards, safety requirements, and local code provisions.

Research reports, such as those issued by organizations like the International Code Council Evaluation Service (ICC-ES), can provide not only the technical specifications but also the rationale behind the approval of certain products or systems. They serve as a reliable source of evidence for building officials and inspectors, helping to ensure that any approved materials or assemblies maintain the integrity and safety demanded by the regulatory framework.

Inspection data and manufacturer specifications can be important, but they may not independently ensure that the materials meet the necessary requirements set forth in the code without the backing of comprehensive research that supports their use. Thus, the reliance on research reports is fundamental in these cases, confirming their pivotal role in the inspection and approval process within the building industry.