We are building a new patio and covering it with an aluminum arbor. The arbor will cover the patio in 2 sections:
-- A-frame section 20' long by 14' wide
-- Flat section 20' long by 38' wide, with a caveat: there is a Sago palm in the corner of the area that we don’t want to cover, about 5'x5'.
I already know that I can span the 20' from the house to the edge of the patio. I am building seating along the 38' long edge. I need to allow for posts in the concrete to support the beams that will hold up the arbor.
I don’t want to put a post in front of the seating area. If the post will be placed behind the seating area, then I need to pour concrete in that spot. Or I can position the seating between the posts. I just need to know if there is an optimum span for posts over a 38’ long span. Should I plan on four posts about 8' apart? Or can I go longer, for example, two posts 16' apart?
Thanks for any help you can offer.
Last edited by btphelps; 09-01-2012 at 04:50 AM.
Reason: add picture