California Mass Timber Reference Guide - Part 1: Code Development and Fire/Life-Safety 2020 SEAOC Convention

摘要

This paper serves as a resource to create a common and consistent understanding of the application of mass timber under the 2019 California Building Code (CBC). "Mass timber" refers to large format prefabricated timber products built-up by adhesives or mechanical means utilizing smaller scale dimensional and/or structural composite lumber and veneers.. There are many advantages to mass timber construction including aesthetics, reduction of environmental impacts from buildings, prefabrication and speed of construction, and reduction in foundations due to lighter structure weight. These advantages have encouraged its use ahead of the pace of building code development. Because these California code changes have prefaced broad application, this resource aims to support engineers in the design and approval of their mass timber projects serving as a framework for discussion between building officials, designers, code consultants, developers, and other stakeholders. Given the breadth of covered topics from code development, structural engineering, and fire engineering, we have broken this guide up into two parts: 1)California Mass limber Reference Guide- Part 1: Code Development and Fire/Life-Safety 2)California Mass Timber Reference Guide - Part 2: Structural Guidelines and Best Practices This paper. Part 1 - Code Development and Fire/Life-Safety, will address how mass timber fits within the current 2019 CBC. and outline the timeframe and details for California's adoption of the 2021 IBC Tall Wood provisions within the 2019 Interim CBC Code cycle. It will introduce fire engineering considerations for design of mass timber elements and their connections, describe the prescriptive guidelines of NDS® Chapter 16. and summarize alternative means and methods strategies including performance-based structural/fire engineering.