Shelah Horvitz wrote:If you read extensively in Oehler, he mentions that he has a lot of troubles with gophers. You may or may not, depending where you are. But critters live in the ground, and this must be taken into consideration. Maybe a lining of hardware cloth or some other kind of wire mesh between the soil and the plastic would be helpful.
Also, plastic breaks down over time. Not so that it goes away but so that its structural integrity is compromised and it breaks into microparticles. So you might design so that in ten, fifteen years, it would be accessible to go in and replace the plastic.
Fred Klammt wrote:My one take on underground buildings is simple: it'll eventually leak. There are SO many variables. Even the PAHS homes have issues - and they are only partially underground. i spent an engineering career in commercial and industrial building operations... and even with their $$$$ budgets and toxic waterproofing materials used - eventually even they leak: cracked floors, shifting & leaking roofs, etc. The big issue is TIME: you might be alright for the first 5 years - but eventually the ground shifts, shit happens, and triple+ waterproofing cracks. Water intrusion and even worse: freezing water/moisture eventually erodes the building's substructure.
My advice: find a nice cave, and let nature do the work, or maybe re-incarnate as a ground hog :-)