Re: Changing polar alignment...Ground shifting?
Ouch. If you really want to know if it's your pier then you can get a digital inclinometer and periodically measure the pier on two axes to get an idea as to what's going on.toggle quoted messageShow quoted text
I'm going to auger out and pour a pier footer in the upcoming spring and I've been taking heavy notes from a good thread on the CN observatory forum called "Pier Engineering":
The basic takeaways are from the author's experiences are:
1. Auger, don't dig out, the hole for the pier, and remove all loose material from the side wall and bottom
2. Pour the footer into the hole, using the hole itself as the form. You can use a sonotube form or whatever for the top several inches to give it a finished aesthetic above ground, but for the majority of it you want direct contact with the surrounding compacted soil.
3. Mind your frostline
4. A bunch of other things that should be considered aside from basic hole digging and concrete pouring
The reasoning is that you'll have concrete directly in contact with the existing undisturbed and compacted soil instead of loose fill. There is also no sonotube that will ultimately decay and leave voids between the footer and the surrounding soil. These voids invite shifting, and the lack of loose fill surrounding the pier means that it will be better supported and more stable.
I'm no soil engineer but it makes sense and, in my case, I really have to nail it on the first try because the place where I want to put a pier is the only location in my yard that I get the most sky... so a do-over would mean a less ideal location, even if it's just a few feet to the side.
Hope the cause of your tilting has an easy solution.
On Dec 29, 2020, at 22:04, Tom Blahovici <email@example.com> wrote: