Mass timber buildings use cross-laminated timber (CLT) or mass plywood panels to create horizontal diaphragms to transfer wind and seismic forces into the vertical elements of the lateral-force-resisting system. Spline connections resist shear forces at the panel joints, which I discussed in this blog post. I wanted to discuss several options for tension straps used for chord splices and collector forces. This blog will not discuss methods for calculating design forces. Instead, I am going to focus on several strap products and how we developed their allowable loads.
The Simpson Strong-Tie structural steel team held an event earlier this year at Topgolf in Vineyard, Utah, to host 65 engineers. The view from the green range at this new Topgolf location was breathtaking with snowy peaks, and the view inside was not bad either, since you could see our Yield-Link® moment connection.
The Yield-Link brace connection (YLBC) from Simpson Strong-Tie is an innovative solution for isolating damage to ensure that braced frames within structural steel buildings remain intact during a seismic or wind event. With predesigned, bolted connections, the YLBC simplifies design work, eliminates the need for field welding, and is easy to incorporate into new builds or retrofits. Continue Reading
Floors and roofs on mass timber buildings are constructed from large panels of engineered wood, such as cross-laminated timber (CLT) or mass plywood. Designers join these prefabricated panels together on site to create a structural horizontal diaphragm to transfer wind and seismic loads to the vertical elements of the lateral force resisting system. Shear forces between panels must be transferred through these panel-to-panel connections. Conventional wood structural panel sheathed diaphragms have shear capacities and fastener spacing tabulated in Special Design Provisions for Wind and Seismic (AWC SDPWS). Mass timber diaphragms, on the other hand, require some more design work by the designer.
Modern construction schedules and conditions create a demand for solutions that can perform in a wide variety of environments. In the following post, Field Engineer Chris Johnson provides a rundown of different concrete and hole conditions for adhesive anchoring, the related design factors, and proper installation instructions and approved adhesive products for submerged anchorage.
Simpson Strong-Tie is proud to announce that one of our product engineers, Bonnie Yang, Ph.D., P.E., CFS, has been invited to give a public lecture on mass timber connections. The date of her lecture will be March 3 at 11 a.m. PST. Yang’s lecture will be part of a Mass Timber mini-lecture series hosted by the School of Architecture at Mississippi State University in partnership with the Mississippi Forestry Association.
On November 9, 2022, we hosted the second in a two-part series on the latest solutions for creating cladding connection designs for structural steel buildings. The second webinar provided a technical overview of the Edge-Tie system. Simpson Strong-Tie R&D engineers Abhishek Kulkarni and Fayad Rahman discussed the performance evaluation testing and design parameters for a façade attachment method that uses adjustable bolted connections without any field welding.
Mass timber floor panel systems for mid-rise light-frame wood construction are becoming more popular. Hybrid wood-framed systems have many advantages over conventional lumber floor systems such as 2×10/2×12 floor joist or I-joist systems.
In this post, we follow up on our October webinar, New Design Methods to Enclose Buildings Faster, by answering some of the interesting questions raised by attendees.
During the webinar, we discussed new design methods and solutions for curtain-wall and cladding connections and how they can maximize efficiency and resiliency throughout the construction process. In case you could not join our discussion, you can watch the on-demand webinar and earn PDH and CEU credits here.Continue Reading
Simpson Strong-Tie has developed a faster, easier and more economical way to connect CLT and other types of panels on mass timber projects. Introducing the LDSS light diaphragm spline solution, featuring a steel spline strap that replaces traditional plywood splines.