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Component Manufacturing dverti$ dverti $ er
Don’t Forget! You Saw it in the
Adverti$$er
August 2020 #12253 Page #35
Do You Know If Your Floor Machine Needs Attention? The old joke is: “What time is it when an elephant sits on your fence? Time to get a new fence.� o what time is it when your floor trusses look like this? It might be time for a new floor machine or at least some attention. In the photo, the floor trusses were manufactured using an older model floor machine. The machine has seen better days. The truth of the matter is that, even in its better days, this problem was commonplace with its design. What was the problem? Well, there could be multiple problems. Here are some in the order of probability.
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1. It is common now to get twist and bows in your floor truss chord materials. It is a fact of life. Grading rules allow some twist in #2 lumber and it can exist in even higher grades. 2. The floor machine air pressure or jigging may be inadequate to provide sufficient pressure to push the lumber into place. 3. Additional verticals might be necessary to provide control of the floor truss height allowing additional pressure to be applied to the clamping system. 4. Workers are not knowledgeable about the importance of tight joints. 5. Verticals might not be cut square. Verify angles are 90 degrees and are not skewed. 6. The floor machine bars used to provide clamping have twisted over time creating improper force along the top of the face, the place where the connectors are applied. 7. Roller guides or cam followers of the floor machine pressure rods need to be rebuilt or reconditioned so pressure is squarely presented to the chords.
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