Full title: Understanding Amendments ro the State Building Code. This book is a compilation of the rule-by-rule analysis portion of the Statement of Need and Reasonableness (SONAR) of the 10 rule chapters adopted as part of the State Building Code in 2015 and 2016. They are presented in a single publication as a help to the user by providing both a brief technical explanation as well as an understanding of the purpose behind each of the amendments made to those 10 chapters. In some cases, explanation is provided for changes made as a result of comments during a public hearing or the public comment period. The intent is that this information will contribute to accurate and uniform application of the code in the design and construction of buildings. The user should be aware that this publication does not contain an explanation of all the amendments to the State Building Code but only those that were introduced or modified for 2015. An explanation of legacy amendments is not included in this publication.