Helix made from 6 inch dia. steel pipe segments
I am seeking help with predicting the final shape of a helix made by welding together segments of 6 inch diameter steel pipe if I predetermine the length of each piece of pipe, the cut angle between the pieces and the pipes rotation between angle cuts.
I would like to make a shape that starts with a small rotational diameter and fast climb rate and finishes with a larger rotational diameter and smaller climb rate.
I want to anticipate the finished shape based on a cut list instead of a gut feeling.

Thanks, Doug