How long to run and pull a feeder?

[Smart $]

This is a requirement I find hard to swallow. When considering adding dead loads, whether supported from the bottom chord or top chord still adds the same amount of dead load to the truss.

It was explained to me like this. The top chord is in compression and the bottom chord is

in tension. Push down on the top chord and the bottom chord will push back up, pull down

on the bottom chord and the top chord will not pull back up it will fail.

Oh, I didn't doubt for a second that someone would have a simplified explanation... but I still don't accept it.

Granted, the bottom chord will likely fail first. But we're not talking about deflecting the truss to the point of failure. Additionally, with the top and bottom chords tied together they act in unison... move either vertically (deflect) and the other moves with it.

 

[benaround]

Oh, I didn't doubt for a second that someone would have a simplified explanation... but I still don't accept it.

Granted, the bottom chord will likely fail first. But we're not talking about deflecting the truss to the point of failure. Additionally, with the top and bottom chords tied together they act in unison... move either vertically (deflect) and the other moves with it.

Smart,

Maybe you should go to the " Vulcraft " web site like I did before I posted. They are the

biggest metal truss manufacturer in the USA.

 

[Awg-Dawg]

Take the bolt out of it and install a 6' threaded rod in it's place. Now get on your ladder hold the threaded rod by the end and hook the beam clamp on the truss. Get channel locks or vice grips and tighten the rod up to hold the clamp in place.

Sweet...... I only hope to remember that nugget when the opportunity arises.