plastic concrete pier forms
Posted 03 January 2013 - 09:32 AM
These, and other brands, can be gotten at local lumber yards and masonry supply houses.
I just re-read your initial post, realized that you're wanting it 8' tall, some of the plastic forms can be custom-cut and stacked - a smaller one on a larger.....
I googled, and found these:
Posted 03 January 2013 - 10:31 AM
I am interested in discussing this option as well!
Posted 03 January 2013 - 11:20 AM
I have used forms similar to the foot-tubes on several jobs, and while they have been used as 'in the ground' piers, we have not cut the plastic away - it is about 1/8" thick. We have, when using them as small-building supports, planted them to a reasonable depth, then trimmed the tops to make them level.
In one case, two of the piers stick up nearly 2 feet, and after 2 years in the sun, seem unchanged.
The thing I don't like about the bigfoot bases is that there's still the sonotube issues to deal with - though sonotube from masonry supply houses is much better quality than that in the big-boxes.
Posted 03 January 2013 - 12:18 PM
In my case being I live 44d North latitude I have to bury the footings 4" below the surface to get below the frost line. I don't want to make an 8' 12" Pier, too big and more susceptible to vibrations as I do imaging 99.9% of the time. I will figure out the correct height, a little shorter than the tripod so I don't need a ladder but high enough to clear the walls on the Skyshed POD to polar align, being so far north I don't see it being a problem but plays a huge factor in planning nonetheless.
Btw, to the OPer, thanks for posting this.
Posted 04 January 2013 - 05:47 PM