Build temporary braces to support the shed walls. Then just cut/pull/dig the old one's out. Then re-plan the entire layout--digging your new post holes.It is a 20 year old shed. the post are rotted and are just sitting on the ground(above ground good yet). Should i put the new post next to the the old and notch together or put new one underneath with 2x6s on sides? Anyone any prior experience? Thanks ahead
I don't know what kind of post hole digger you have, but I can't go further than 2 1/2 feet with mine. The handles get boxed into the hole (unless you widen the hole big enough to bury your neighbor's Rottweiler?)Smeagol,
I have seen it done several ways. A lot of farmers will dig down beside the old post and put in an new 8' post about 3.5' in ground and 4.5 out. then bolt through old and new post with about three 3/4" threaded rod.
One of the local businesses in Indiana started manufacturing an cement base with a metal spade that can be inserted into the good portion of the old post. Some guys are using this for new construction as the cement base is rated for 50 years I think.
I have personally sandwiched old posts and boxed them in also. Usually overlap at least 3 feet.
More than one way to skin this cat.
I don't know what kind of post hole digger you have, but I can't go further than 2 1/2 feet with mine. The handles get boxed into the hole (unless you widen the hole big enough to bury your neighbor's Rottweiler?)