[flyinhi79]

How far can a 2X8 (redwood) span on a pergola? I'm thinking the same rules as floor joists don't apply as they are not supporting anything but 2X2 lattice boards. I need to span 17' but I'm afraid they will sag...

 

[Yoyizit]

http://www.woodbin.com/calcs/sagulator.htm
but will your eye be drawn to whatever sag there may be?

 

[Scuba_Dave]

That link doesn't seem to be working ?

 

[Yoyizit]

Still works for me. Try cut and pasting
xxhttp://www.woodbin.com/calcs/sagulator.htmxx
without the x's.
Computers are great when they actually work as intended.