The commentary of this code discusses some of the considerations of Committee 332 in developing the provisions contained herein. Explanation of the departure of this code from ACI 318 is emphasized. Comments on specific provisions are made under the corresponding chapter and section numbers of this code.
The commentary is not intended to provide a complete historical background concerning the development of this code, nor is it intended to provide a detailed résumé of the studies and research data reviewed by the committee in formulating this document. This code is meant to be used as part of a legally adopted building code and, as such, must differ in form and substance from documents that provide detailed specifications, recommended practice, or complete design procedures.
This code is intended to cover all residential structures that fall within the scope of the International Residential Code (IRC-2012). Requirements more stringent than the code provisions may be desirable for large, complex, or irregular structures; high-hazard areas; and other unusual construction. This code cannot replace sound engineering knowledge, experience, and judgment.
A building code states only the minimum requirements necessary to provide for public health and safety; this code is based on this principle. For any structure, the owner or the designer may require the quality of materials and construction to be higher than the minimum requirements necessary to protect the public as stated herein. Lower standards, however, are not permitted. The commentary directs attention to other documents that provide suggestions for carrying out the requirements and intent of this code.