Had the math sorted previously but now I'm hoping to simplify. I'm hanging three sails -- a 12 x 12 square, then a 12x equilateral triangle, then another 12 x 12 square. The far ends will be attached to the house to studs through the exterior wall. The near ends will be attached to 6x6 12' timber posts sunk in 12" x 4' holes with concrete, for 8' of exposed post.
I was originally going to use four posts but my question is: can I use a single 6x6 in the middle to support one end of the triangle and one corner of each of the squares so that I need only three posts? They'd be anchored to three of the four faces of the post.
Thanks in advance!