Moment connections are a common lateral system in structural steel design, offering the advantage of unobstructed sight lines and clear passageways. However, they often come with significant cost and labor demands. Fully welded moment connections require extensive beam preparation, welding, and inspection, while common bolted solutions, such as flange-plated and end-plate moment connections, still involve welded components, leading to installation and fit-up challenges.
Category: Lateral Systems
Little did we know when we introduced our first holdown in 1966 that our product innovations would lead us to solutions that can help hold together five-story buildings during an earthquake or allow builders to more easily retrofit structures and install larger window and door openings in homes. Our offering of lateral-force resisting systems, including Wood and Steel Strong-Wall® shearwalls, Strong Frame® moment frames and new Strong-Rod™ Systems, gives designers and engineers added design flexibility in wood-frame construction and the confidence that almost anything is possible.
Strengthen Your Designs with the Latest Strong-Wall® Applications Webinar
In this post, we follow up on our October webinar, by answering some of the interesting questions raised by attendees. During the webinar, we discussed the latest Strong-Wall applications and innovative design strategies to help you optimize your structural designs. We walked through key updates, showcasing how our enhanced Strong-Wall solutions can streamline the design process while improving structural performance and compliance.
30 Years After Northridge: Lessons, Progress, and Community Resilience
Rachel Holland, a Simpson Strong-Tie engineer, reflects on the profound impact of the Northridge earthquake in Southern California on January 17, 1994. Living just 8 miles from the epicenter, the earthquake shaped her perspective on natural disasters and inspired her journey into engineering. In an interview, she shares her vivid memories of the chaos, destruction, and challenges faced during the aftermath. Hear how this seismic event played a pivotal role in shaping Rachel’s career and influencing her commitment to structural engineering.
Tenth Day of Trivia — Shearwalls
The Simpson Strong-Tie Strong-Wall® shearwall was introduced in 1999. The 1997 Uniform Building Code had incorporated restrictive 2:1 aspect ratio requirements for wood structural panel (WSP) shearwalls in high seismic areas. We conducted extensive cyclic testing of complete wall systems (not just components) to prove that narrow Strong-Wall shearwalls achieved the high performance required for seismic and wind designs.
Rod Elongation: Use of Gross Area vs. Effective/Net Tensile Area
Within the world of multifamily construction, manufacturers design and detail the multistory continuous threaded rod holdowns used as shearwall overturning restraints. The Strong-Rod® anchor tiedown system (ATS) is Simpson Strong-Tie’s solution for the industry and has been the subject of many SE Blog topics in the past.
Solving the Puzzles Presented by “As Built” Conditions
As civil and structural engineers, we know all too well that what is on the plans doesn’t always translate exactly as intended in the field. Part of what keeps our jobs interesting is having to solve problems that arise with “as built” conditions that are not always easy to change. It can feel like a complex puzzle trying to figure out what is possible when considering all aspects, including demand loads, load transfer, construction sequence, and also cost.
Business Owners: “What Else Could Happen?” — Part Two
Remember June 2020? While the pandemic was raging, we produced a blog post entitled “Business Owners Today: What Else Could Happen?” Well, I guess the answer to that rhetorical question is a LOT: the eventual decline of the pandemic, dramatic national government transitions, economic ups and downs, natural disasters and a devasting war abroad.
How to Accommodate Misplaced Shearwall Anchorage
For several years, the Simpson Strong-Tie Strong-Wall® research and development team has kicked around the idea of developing an “adapter” that would allow for field substitutions or accommodate misplaced Strong-Wall anchorage.
Questions Answered: Strong-Wall® High-Strength Wood Shearwall Webinar
In this post, we follow up on our July webinar, Innovations in Strength and Versatility: Overview of the Strong-Wall® High-Strength Wood Shearwall, by answering some of the interesting questions raised by attendees. Continue Reading
Introducing the Stronger, Simpler and More Versatile Strong-Wall® High-Strength Wood Shearwall
After years of development, we’re excited to introduce the newest member of the Strong-Wall® shearwall family – the Strong-Wall high-strength wood shearwall (WSWH).