In this session, TwinKnowledge will discuss a new type of digital twin that has emerged with AI, cognitive digital twins (CDTs), and their implications for the AECO industry. Cognitive digital twins enable O&M workflows that are supported end-to-end by AI. They are built on top of existing digital twins; they use AI to make sense […]
As an increasing number of homes are built in the wildland-urban interface (WUI), it is important to understand how residential construction performs when exposed to wildland fires. WUI zones are the areas where wildland – forests, chaparral, grassland, etc., meet or mix with human development. Home hardening is a term used to describe purposeful actions […]
The building industry is striving to adopt green solutions to make infrastructure more energy efficient to meet the 2050 net-zero climate goals. Planning requires reliable environmental datasets that are crucial in designing, building, and maintaining the global built environment, as well as other energy-related processes and investments. NASA’s Prediction of Worldwide Energy Resources (POWER) Project […]
Composite Plate Shear Wall / Concrete Filled (C-PSW/CF), also known as the SpeedCore system, is an efficient seismic force-resisting system for buildings. Two types of C-PSW/CF systems are possible: coupled and uncoupled. Seismic design requirements for uncoupled C-PSW/CF systems were addressed in ASCE/SEI 7-16 and AISC 341-16, Section H7. Coupled C-PSW/CF systems are more ductile […]
Cross Laminated Timber (CLT) Shear Wall Design Example Seismic force resisting systems based on Cross Laminated Timber (CLT) shear walls have garnered considerable attention for use in building structures around the world for many years with standardization as a seismic force resisting system happening in the U.S. for the first time with inclusion of seismic […]
New Multi-Period Response Spectra and Ground Motion Requirements This presentation summarizes a comprehensive set of new multi-period response spectra (MPRS) and related ground motion requirements of the 2020 edition of the NEHRP Recommended Provisions (and ASCE/SEI 7-22). These changes collectively improve the accuracy of the frequency content of earthquake design ground motions and enhance the reliability of the […]
Evolution of Seismic Design Values over the Years The 2020 NEHRP Provisions, and ASCE 7-24 that is based on it, adopt a new USGS ground motion model that incorporates stie class and basin effects directly into the calculation of gridded seismic design values. For the first time, these values are available only through an on-line […]
The 2020 NEHRP Provisions developed major updates to nonstructural seismic design provisions which were then adapted for Chapter 13 of ASCE/SEI 7-22. The primary focus of the updates is the equation used to determine design forces for nonstructural components, but there are updates to other provisions as well. The training will be given in two parts. Part […]
The 2020 NEHRP Provisions developed major updates to nonstructural seismic design provisions which were then adapted for Chapter 13 of ASCE/SEI 7-22. The primary focus of the updates is the equation used to determine design forces for nonstructural components, but there are updates to other provisions as well. The training will be given in two parts. Part 1 will […]
Coupled shear wall systems are recognized as distinct from isolated shear wall systems in Canadian and New Zealand codes; they are also accorded higher response modification factors in view of their superior seismic performance. ASCE 7 has so far made no such distinction. A ductile coupled wall system of reinforced concrete has now been defined […]
The 2020 NEHRP Provisions and ASCE/SEI 7-22 incorporate several notable changes to seismic design of diaphragms. This includes expanded applicability of the ASCE 7-16 Section 12.10.3 alternative design provisions for diaphragms, originally developed in the 2015 NEHRP Provisions. This also includes new Section 12.10.4, codifying the rigid wall-flexible diaphragm (RWFD) methodology published in FEMA P-1026, Seismic Design of […]
The 2020 NEHRP Provisions and ASCE/SEI 7-22 incorporate several notable changes to seismic design of diaphragms. This includes expanded applicability of the ASCE 7-16 Section 12.10.3 alternative design provisions for diaphragms, originally developed in the 2015 NEHRP Provisions. This also includes new Section 12.10.4, codifying the rigid wall-flexible diaphragm (RWFD) methodology published in FEMA P-1026, Seismic Design of […]
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