Good joint detailing at the design stage can help truss builders accurately position truss plates, including the back plate which is essentially positioned “blindly.” Laser projection is excellent for positioning the top face plate, however, it is subject to the same limitations for...

It wasn’t enough for Jack Schmitt, President of Truswal, to introduce wood-web floor trusses. He also had to demonstrate how to build them, and that required a special machine. Schmitt turned to his trusted associate, Carl Virta, to come up with a process, and Carl knew who could help him....

Imagine a third-party truss inspector is in the yard checking truss plates as part of quality control. The plate placement diagram indicates the web needs twenty-five teeth; however, the inspector counts twenty. Even though the shop positioned the plates as designed, is the plate placement...

On occasion, we are required to utilize a detailed tooth count to qualify a connection on a metal plate connected wood truss. Fortunately, we have several tools that can assist us. My June article, “Which is Better: Plate Placement Method or Tooth Count Method?”, includes a...

To answer the question of which is the better method, we should start with a little background. A critical plate is a plate with a Joint Stress Index of 80% or greater. The ANSI/TPI 1–2014 Standard stipulates that critical plate inspections must be conducted when completing the three...

I-joists dominate the joist market due to their high material efficiency and low manufacturing cost. However, this product has disadvantages, including difficulty in HVAC installations and the possibility of bottom chord support only. Therefore, the market would pay a considerable premium for a...

The simple answer to the title question, can designs be changed during manufacturing, is yes. But, the situation is rarely straightforward and simple in reality. The better question is: What considerations are necessary when making modifications to the design while manufacturing a truss? To...

With the invention of integrated production methods, one of the greatest evolutions has been the electronic transfer of information from the truss designs to the computerized equipment, eliminating human error and translation issues. Automatic puck systems, lasers, ink jet marking, or shop...

The Advertiser - June 2017 | Page #30 Compliance with ANSI/TPI 1–2014 requires maintaining member to member gaps at less than 1/8 inch. An exception would be for floor truss chord splices where the limit is 1/16 inch. While building trusses, the code calls for tight joints. In a...

On a recent trip to Japan to observe construction manufacturing methods, I was struck by the amount of time a plant manager spends on the production floor. Comparing this Japanese methodology to our truss industry, our plant managers and upper management spend relatively little time engaged in...