It is very important to understand how the metal alloy makeup of tubing affects the finished hoop size.
Example: 1 3/8" by 17 gage fence tubing purchased from store "A" may produce a larger or smaller finished hoop width than the same size and gage tubing purchased at store "B". Not often, however sometimes the difference in hoop size is dramatic.
Our hoop benders are designed to produce the desired hoop width "assuming that the tubing you purchased is within the average metal alloy hardness which is the case most of the time.
The following is the average uncompressed hoop widths of each high tunnel hoop size. Uncompressed meaning that the hoop sections foe the first test hoop are put together laying flat on the ground. The two ends pushed together just enough to remove any slack at the joints, then measuring the width between the two ends (referred to in the instructions as the painted ends.
For the 24’ wide hoops the uncompressed width should be between 24’ 9” and 27’
For the 20’ wide hoop the uncompressed width should be between 20’6” and 23’.
For the 10’ wide hoops the uncompressed width should be between 10’ 6” and 12’.
For the 12’ wide hoops the uncompressed width should be between 12’ 6” and 14’
The following is the average height of each of the hoop widths installed into ground anchor post. These are average measurements and can vary depending on how tall the ground postare installed. Portable units being 10’ or 12’ wide are the same. The 20’ and 24’ hoops should never be used for portable structures.
The 24’ wide hoops are 11’ 6” tall at the center.
The 20’ wide hoops are 9’ 6” tall at the center.
The 12’ wide hoops are 6’ 6” tall at the center.
The 10’ wide hoops are 7’ 6” tall at the center.
Hoops that are under sizes by no more than 12” can be resized out ward by using the resizing instructions. Hoops that are larger than the maximum uncompressed width should not be used or compressed into the finished installed width. Doing so may damage the hoop beyond repair.
Below or above average alloys do exist and find their way onto the market. Rarely does this occur, because of this fact we strongly advise you to purchase only enough tubing to bend two test hoops before purchasing all the required tubing.