The 2012 Seattle Building Code Interpretation, 714.4 Penetrations of Horizontal Assemblies is now available. It is an update of Code Alternate CA 713.4, which was last available in the 2009 edition of the Seattle Building Code. In other words, this new interpretation clarifies how to properly install a ceiling fan or a recessed light so that the ceiling remains fire-resistant.
Not all construction and demolition waste needs to end up in a landfill. In fact, much of that material can be recycled and even reused. With thoughtful consideration, developing a plan for how each material can be managed prior to the start of a project will help to ensure materials are handled in the most sustainable way. Therefore, new requirements for both the 2012 Seattle Building and Residential Codes ask that a Waste Diversion Plan is submitted with your application for all projects greater than 750 square feet. The plan should identify assumed waste materials, the hauler, and the receiving location for each material.