Part of this course uses Design of Wood Frame Buildings for High Wind, Snow, and Seismic Loadings (2015 WFCM Workbook) which provides a design example, helpful checklist, and background information for design of a wood-frame structure in accordance with the 2015 WFCM (referenced in the 2015 IRC and IBC). Using plans from a 2-story residence, participants prescriptively design the structure to resist high wind and typical residential gravity loads. An overview of appropriate loads to apply to residential structures will be provided. Participants will work through roof, wall, and floor system designs including shear walls and appropriate connections between roof, floor, wall, and foundations to maintain load path.
Elements and subassemblies which receive loads both directly and as part of the main wind force resisting system, such as wall studs, must be checked independently for Main Wind-Force Resisting System (MWFRS) loads and Component & Cladding (C&C) loads. A load bearing stud wall design example based on the allowable stress design methods outlined in AWC's 2015 National Design Specification® (NDS®) for Wood Construction and 2015 WFCM along with ASCE 7-10 Minimum Design Loads for Buildings and Other Structures will demonstrate standard design checks for limit states of strength and deflection.
In early 2016, the ICC Board of Directors approved creation of an ad hoc committee to explore the building science of tall wood buildings. The Tall Wood Building (TWB) Ad Hoc Committee reviewed voluminous materials regarding tall wood buildings, including results of various testing around the world, as well as studies domestically in support of the TWB charge to conduct a thorough review of the science of tall wood. The TWB developed its own test scenario(s) to substantiate code change proposals (testing was carried out at ATF labs); and worked to develop a comprehensive set of technically-substantiated code changes for consideration during the ICC 2018 Group A code development process. The resulting changes to the 2021 International Building Code allow for construction of mass timber buildings with larger heights and areas than is currently permitted in Types III, IV, and V construction.