Wobbly Pergola - What to do?
I've built a pergola using Redwood out of 4x4's (posts), 2x6's (beams), 2x6's (joists) and 2x2's. The pergolas is 4 feet wide and approximately 26 feet at the longest dimension, it's shaped like a large U -- looks something like the attached picture (top view)
The posts are set on top of concrete filled sonotubes and attached via U-brackets. There are knee braces which are set down from the top of the posts approximately 18". Longest span between posts is approx 11 feet. The whole structure wobbles when I grab a post and shake it with one hand. Any ideas on how I can decrease the wobbling?
Last edited by camsauce; 08-13-2008 at 12:00 AM.