As said above, it seems with a center vertical I can dramatically reduce the cost of the stand by using 1530 (1.5" by 3") Aluminum. I knew I would pay a premium for no center vertical but, if I'm right, the scale of difference in price is shocking.
I'm a bit unsure of how to use the calculator. If I use a center brace do I cut the span in half? Do I cut the weight down to a quarter of the tank weight? It seems the 36" span only seems to be supporting a quarter of the weight now. Even if I leave half the weight of the tank (1100 pounds) it still seems I can use the 1530, if in fact I should reduce the span to 36" because of the center brace.
Any help here is greatly appreciated.
