Hi, folks. I'm planning on building a porch -- that is, a shed-type roof that will come off the back of the house and shelter an existing flagstone patio that is mortared to an eight-inch concrete slab.
What I'm trying to figure is how many posts I need.
Dimensions will be about eight by 24 feet. Construction will be post-and-beam with 6-by-6 posts and beams. The underside of the roof will be open, so the posts, beams, joists and decking will all be visible. Rather than plywood, the decking will be tongue-and-groove planking to provide a beaded effect.
I'm thinking three posts should be enough. That is, one post at each corner and one in the middle. So there will be support every 12 feet. Am I OK here?
I don't want to clutter the area unnecessarily, so the fewer posts the better.
Thanks
Mark