Pouring the columns on our South Burlington project brought our memories back about 7 years ago to our very tall column pour. We poured almost 30' of column in one shot.
The manufacturer of the fabric form was very impressed so they highlighted it on their website
http://www.fab-form.com/fast-tube/fast-tubeProjectTreeHouse.php
To see some more pictures of this project check out our website
http://www.arrodesign.org/projects/concrete-treehouse/