Applying special load conditions to trusses is a tedious, repetitive, and time-consuming task for designers. Without a visual representation of the load in relation to the trusses on a plan, it can be a challenge to position the loads and determine the load magnitudes required for each truss. As...

In “Cost-Saving Measures and Memorable Debacles,” I discussed the problems encountered on a site where the owner was acting as general contractor for his new house build and problems that ensued when an inexperienced framer was tasked with installing a complex truss roof. In that...

A splice is the point where two chord members are joined together by a metal connector plate to form a single member. It can occur at a panel point or between panel points depending on the specific design of the truss and the preferences of the truss manufacturer. While the program checks all...

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...

MSR Lumber has a long history of being the right choice for component manufacturers. This reliable and consistent lumber grading system revolutionized the construction industry when it was introduced to the market in the 1960s, and it continues to be a mainstay for truss producers decades...

As this issue of The Advertiser is being published December 1st, I thought I would share my wish list for truss and component manufacturers this year. Feel free to use this in your letter to Santa, too! Dear Santa, I promise I tried to be a good component designer this past year. My...

Oftentimes, MiTek engineers are getting requests for repairs of trusses installed out of plumb. This is a common installation issue and has some allowable tolerances. Tolerance is critical for both a good roofline and effective bracing. Exceeded erection tolerance can cause overloading,...

Metal plate connected roof and floor trusses are used widely in residential single family, multi- family, commercial, and agricultural construction. They provide design flexibility, span greater distances than traditional “stick framing,” and allow faster erection of the roof system...

MiTek engineers are often asked what maximum gaps are allowed for wood member-to-wood member in metal-plate-connected wood trusses. Gaps between wood members are addressed in Chapter 3 Quality Criteria for the Manufacture of Metal-Plate-Connected Wood Trusses of the ANSI/TPI 1-2014 (National...

Prior to joining Simpson Strong-Tie, I spent 13 years working as consulting structural engineer. As a specifier, I was amazed at the number of resources Simpson made available to me. From software, to blogs, to design guides, there were many resources to help me solve problems and streamline the...