Daniel Andy wrote:One modification that may be valuable and I havent seen it in this thread.
The wood the rock jacks are made of will tend to rot where it touches wet dirt and this will lead to leaning and failure earlier than necessary. Nobody likes dropping their projects to go mend fences.
You should be able to make the rock jacks last longer on dirt if you can find a few flat rocks and put one under each post.
May be overkill, maybe not. Depends on your soil moisture, I bet. This could be valuable in wetter climates and not necessary in inland or bedrock applications.
Jay Angler wrote:By "ONLY nails" are you meaning that never screws or brackets? Or that it simply isn't practical to drill a hole through and use a wooden dowel? Have your people ever tried making a Rock Jack with either mortice and tenon or holes and dowels? It might be time prohibitive, but it would be interesting to know if it would work.