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SUMMARY:Seismic Design of Coupled Composite Plate Shear Walls / Concrete Filled (C-PSW/CF)
DESCRIPTION: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 and have more redundancy than uncoupled systems\, but ASCE/SEI 7-16 did not assign seismic design factors in Table 12.2-1. A FEMA P695 study was conducted to verify the design factors that should be used for such Coupled C-PSW/CF structures. Adding this as a separate category in Table 12.2-1 was important because they can be used as the elevator core wall systems in modern high-rise buildings. Two line items featuring this system are now added to ASCE/SEI 7-22 Table 12.2-1 under Building Frame Systems and Dual Systems with Special Moment Frames. R = 8\, Cd = 5.5\, and Ω0 = 2.5 are the design factors in both line items. The height limits are the same as for corresponding uncoupled isolated wall systems. \nA definition for the Coupled C-PSW/SF system and its design and detailing requirements were not included in AISC 360-16 or AISC 341-16. A new Section H8 in AISC 341-22 includes specific provisions for the definition and use of this Coupled C-PSW/CF system\, including details on the capacity design principle limits on applicability. This presentation outlines the above developments and presents a detailed design example illustrating the Coupled-C-PSW/CF seismic force-resisting system. \nLearning objectives: \n\nSeismic design requirements\, detailing\, and factors for coupled composite plate shear walls / concrete filled\nLateral load behavior of coupled composite plate shear walls / concrete filled\nSeismic design procedure for coupled composite plate shear walls / concrete filled\nSeismic design of coupling beam-to-wall connections
URL:http://35.169.182.169/event/seismic-design-of-coupled-composite-plate-shear-walls-concrete-filled-c-psw-cf/
LOCATION:Virtual Event
CATEGORIES:BSSC NEHRP Webinar Series,Webinar
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DTSTART;TZID=America/New_York:20220816T130000
DTEND;TZID=America/New_York:20220816T143000
DTSTAMP:20260502T194408
CREATED:20250815T172436Z
LAST-MODIFIED:20250815T172436Z
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SUMMARY:Essential Infrastructure: Lifelines & Access to Internet
DESCRIPTION: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). \nAccording to the Environmental Protection Agency\, there are an estimated six to 10 million lead service lines across the country. Cities have been taking measures to finance projects that identify and remove the bad lines\, but it hasn’t been enough. The U.S. is ranked 26th in the world for safe drinking water and sanitation by the Environmental Performance Index. Knowing that access to clean drinking water is a basic human right\, the IIJA allocated $55 billion to further reach this goal. \nIn January 2022\, the U.S. Department of Energy launched the Building a Better Grid Initiative to make the nation’s power grid more resilient to the impacts of climate change and increase access to reliable and affordable clean energy. The IIJA earmarked $28 billion for resiliency of powerlines and over $60 billion total for clean energy. \nClosing the digital divide is more important than ever in the wake of the COVID-19 pandemic. Americans need access to high-speed internet for work\, study\, and play. Lack of access to broadband infrastructure has become an equality issue in the U.S. The IIJA will work to combat this by delivering more than $60 billion in funds to expand access to high-speed networks throughout the nation.
URL:http://35.169.182.169/event/essential-infrastructure-lifelines-access-to-internet/
LOCATION:Virtual Event
CATEGORIES:Infrastructure 2022 Webinar Series,Webinar
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