1/29/2024 0 Comments Sandbag fallout shelter planQ: Have earthbags been used for shoring an underground tunnel or shelter?Ī: Earthbag vaults are a bit tricky, but possible if they don't span any more than about 6 feet max. Domes are a possibility, but burying earthbag domes is largely untested, so there might be some risk here. As for a roof on an earth-sheltered home or a totally underground structure, this would be a most important element. In general I would suggest considering designs that have curved walls, as these tend to be stronger and can withstands the pressures of earth better. And, of course, earthbags are a good choice because they are environmentally benign, representing very little embodied energy. One major advantage of earthbags is that they are generally not adversely affected by moisture, unlike many other building materials. Q: This is a sincere request for your input on using earthbag techniques to build an underground shelter.Ī: I feel that earthbags are an excellent choice for building shelters that are earth-bermed or even earth-sheltered.but these must be carefully designed and engineered to withstand the incumbent pressures. Q: How about waterproofing considerations?Ī: Yes, it would have to be waterproofed, and could be done with a few layers of heavy polyethylene plastic.Ī: I buried my earthbag pantry dome, which was covered with plastic and backfilled with maybe 6 inches of soil and gravel. You will need to carefully engineer whatever you design so that it will withstand any weight that is placed upon it. ![]() I am looking for a construction method that can be done individually over time without having to hire any big earth moving equipment or hired help.Ī: Earthbags certainly fit this bill, since they can be used below grade and they are easy for one person to handle. Q: How about underground construction? As in a storm or fallout shelter.
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