The 2009 Washington State Building Code, Chapter 51-50 WAC, is a comprehensive set of regulations governing building construction and modifications within the state. Adopted by the Washington State Building Code Council under the authority of Chapters 19.27 and 70.92 RCW, the code was first established in 1974 and saw significant procedural delegation to the Council in 1985.
The code is structured to provide a clear order of precedence among various related codes, ensuring that when conflicts arise, earlier named codes take priority over later ones. It includes the International Building Code, International Residential Code, International Mechanical Code, International Fire Code, and Uniform Plumbing Code. Each section is meticulously organized to ensure compatibility and easy reference.
Enforcement is mandated at the local jurisdiction level, allowing for delegation to other jurisdictions or inspection agencies if necessary. Amendments to the State Building Code are managed through established procedures, with yearly reviews and specific criteria for local modifications. However, amendments that lower the minimum performance standards of the codes are not permitted, particularly in areas related to energy efficiency and accessibility, to maintain consistency and safety.
Additionally, the code addresses the exclusion of temporary structures such as horticultural growing structures and temporary worker housing from certain regulatory requirements, acknowledging their unique needs and impacts. The implementation of these rules is set to be effective from July 1, 2010, aiming for uniform adoption across all counties and cities within the state. Also included are provisions for the management and storage of recyclable materials and solid waste in new buildings to promote environmental sustainability.
