#### bshock84

##### Member

- Joined
- Nov 14, 2009

- Location
- Memphis TN

When reading truss loading charts, I assume this is based on hanging a particular span of truss with two points, is that correct?

If that's the case, what happens to the loading chart when you add a third motor, say a center point? Does that then cut that span in half, and you then have two separate spans?

Say I have a load chart that lists a 48' span of truss with a UDL of 46lbs per foot. And also lists a 24' span of the same truss with a UDL of 204lbs per foot.

If i hang a 48' span of this truss, but then add a center point motor, do I then have 2 - 24' spans with UDLs of 204lbs per foot, or is it still counted as a 48' span?

Seems to me that I would treat it as 2 spans of 24'? Is this correct at all? Can anyone confirm or set me in the right direction on this?

Thanks!