The Code generally specifies a simplified
approach for many of its requirements. A designer
may choose to use a more rigorous analysis to develop
design and construction requirements. When the designer
decides to take this approach, the designer shall provide to
the owner details and calculations demonstrating that
design, construction, examination, and testing are consistent
with the design criteria of this Code. These details
shall be adequate for the owner to verify the validity
and shall be approved by the owner. The details shall
be documented in the engineering design.