Wood spans to hold minimal weight 1

[LAEd]

I am trying to figure out what sizes of 2X's or 4X's are needed to span an area.
The idea is to support a canvas shade covering without blocking a view with center posts.
The maximum span would be 25'.
Is there a chart for this type of construction?

 

[boo1]

A good free truss plan link is:

http://www.public.iastate.edu/~mwps_dis/mwps_web/tr_plans.html

Consider looking at this web site

http://www.woodtruss.com/.

It provides links to several trade aasociations and their publications.

 

[alexlu168]

try this

http://www.awc.org/calculators/span...d=10&submit=Calculate+Maximum+Horizontal+Span

Thanks,
Alex Lu, M.S., P.E.

http://www.geocities.com/alexlu713/