Is This Happening at Your Plant?
At a recent TPI 3rd Party Audit, the In-Plant Inspector (IPI) and I were inspecting trusses coming off the line as is normal in an audit. A stacked truss caught my eye, mainly because the top plate did not line up with the plate on the opposite side of the truss. Upon careful examination, indeed...
Spida Acquires Square 1 Design
The acquisition of Square 1 Design solidifies Spida Machinery’s position at the apex of machinery suppliers for the Building Components industry. Globally positioned to supply machinery around the world, our equipment profile includes options for all component manufacturers—from...
Compression or Tension Web Configuration—Which is Better?
On a recent Quality Assurance Audit at a large facility, we witnessed a floor truss builder carefully spacing out his floor truss webs in the allotted space available with precision and care. He was very meticulous. I asked him why he was doing that and he explained that his in-house inspector...
How Your Plant Can Benefit From a Spida Extruder Wall Panel Framing Line
Powered by people, a manual line in an average component plant is composed of a rough opening station, a subcomponent station, a framing station, a squaring station, and a sheathing station. In the configuration, typically 8 people are on this line, and 1000 LNFT of output is the average goal...
Do Connectors on Both Sides of a Truss Ever Need to be Placed Exactly?
Once in a while, I’m asked—Is there ever an occasion when connectors on both sides of the truss need exact placement? Well, the answer might surprise you. There are, in fact, several situations where the top face connector and the bottom face connector need to be exactly...
All Things Wood:
The Critical Job of Truss Builders
Last month’s fine article by Glenn Traylor, “How Do I Choose Which Plates for a Critical Plate Inspection?”, reminded me of investigative experiences I’ve had throughout my career. The work of truss builders is extremely important, as evidenced by instances of truss...
How Do I Choose Which Plates for a Critical Plate Inspection?
The requirement is: an inspector will, on average, inspect one critical plate for every inspection made during a week. That requirement is the baseline number for the quantity of critical inspections to perform—but because some trusses do not have critical plates, it’s necessary to...
What Decisions Should Truss Builders Be Able to Make?
In the November 2017 article, “So Who Exactly is Responsible for Lumber Quality?”, we discuss the abundance of quality building materials and the responsibility of the fabricator to evaluate their application in products. We should recall the ultimate decision maker in determining...
How Should Defects Be Recorded When Inspecting a Critical Plate?
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 inspections per station/per shift/per week requirement. On average, the standard requires one...
How Important is Angulation? Why is It Important?
Per ANSI/TPI 1–2014, National Design Standard for Metal Plate Connected Wood Truss Construction, plates should be installed within a 10 degree tolerance. So what happens when the plate is rotated and exceeds this requirement?
The simple answer is: the configuration and design of...