Pouring pier footers - are forms necessary?
I'm building a largish deck this summer, which will be attached to the home via ledger. The plans call for 14 pier footers, each 2' in diameter, 4' deep. I had planned on placing Sonotube forms into each of the holes.
Over the weekend I dug the holes with the help of a skidsteer, and I'm now wondering if the extra expense of the forms is necessary. The ground in our area is hard clay, and I'm looking at 12 almost perfect cylindrical voids in the ground (two had some problems...haha).
The primary advantage i see of the concrete form is getting the pier above grade, but at $40+ per hole for the 2' tubing, I'd rather spend the money on a new table saw.
I will be using rebar either way, just looking for some feedback.