Wood Truss Design per ANSI/TPI 1-2014

[Wood Design]

Hello,
I am working on a excel sheet to calculate member CSI's for a wood truss per ANSI/TPI 1-2014.
Dose anyone have any worked out examples of truss design calculations that are worked out and follow ANSI/TPI and not just NDS?
Or maybe can help clarify some things out of ANSI/TPI 1-2014 for me:
1)
Regarding the "buckling design value, Fce" equations on page 58. I feel like the second equation, the one for FcEy, should be using Lu and not L' as described to do in the table on top of page 56. And that Lu is the actual length between top chord purlins as shown in Figure 7.2-2 on page 57.
2)
Regarding equation E7.2-1 for calculating the K factor on page 55. If you have a truss with only 1 top chord panel (no adjacent member) the K value will always = 1.0. Or should you use the member on the other side of the truss peak in this case? Should you always be considering the member on the other side of the peak? Any light that you could shine on any of this would be helpful.

 

[JAE]

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[Wood Design]

(JAE)
It is a link to the online version of ANSI/TPI 1-2014. Not sure why it isnt working but you should be able to find a PDF of it with a quick google search.

 

[Ron247]

I think the L' value is different for each direction. It does not calculate out the same for the 2 directions. Section 7.2.1 defines L' for d1 while L' for d2 is stated as Lu. So I think the equation is correct but there is not a single value for L'. I see this "notation" as confusing but I am much more familiar with NDS.

For Part 1, The 2018 NDS Page 23, has 2 almost identical equations for FcE1 and FcE2. They use le1/d1 and le2/d2 respectively.