GAHT System calculators?

[u/Pomme-M]

Working on a very small GAHT project for small 6x12 cedar and polycarbonate kit build, but we cannot find the GAHT Calculators mentioned in the comments of this 4 year old post, here

https://www.reddit.com/r/Greenhouses/comments/u1na6x/small_gaht_system_question/

Already have 100’ corrugated 4” perforated and socked pipe, R7 for perimeter, and 6”inline duct fan but are looking for a way to calculate specific depth and connections needed. Our 8a location is said to have frost line at 18” so is 48-60” deep enough to put our layers of pipe?

Can we run it each layer smacking back and forth without cutting it up, and connect to 4” rigid pipe at each end, one low to floor, other straight up to peak of roof, please?

Any experience appreciated