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As architects and planners seek to maximize the use of all available space, the next generation of low-slope roofs are not only waterproof coverings, but platforms for assets such as solar panels, green roofs, water storage, and amenity spaces. With so much value tied up in our roofs, their resilience is more important than ever. […]
This session of the Infrastructure 2022 webinar series will highlight disaster preparation projects to address worsening natural disasters. The Infrastructure Investment and Jobs Act (IIJA) is the largest-ever federal investment in climate change. The IIJA earmarked $8 billion for wildfire management, $6 billion for drought management, $8.3 billion for water storage and sanitation, and $12.5 […]
This session of the Infrastructure 2022 series will focus on clean water, electrical grid and powerline resiliency, and closing the digital divide as it pertains to the Infrastructure Investment and Jobs Act (IIJA). According to the Environmental Protection Agency, there are an estimated six to 10 million lead service lines across the country. Cities have […]
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 […]
The Infrastructure Investment and Jobs Act will improve the way Americans travel, as well as how goods and materials are transported. With the current economic state occurring from a multitude of issues, improving our transportation infrastructure is more important than ever. IIJA has earmarked $25 billion for airports, $66 billion for railways, and $100 billion […]
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 […]
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