/diy/ - Do It Yourself

>>521636
>Were going to use a type of truckliner for the outside.

Finally, someone that is thinking.

>>285491
Here's a comparison. This one would cost a fortune with the Rhino liner spray, which isn't technically needed though it would increase its life time by many many decades.

>>276492

Depends what your using it for.

Otherwise Tent.

>>258901
>>258905

Fully round will be safer regardless. Plus, the extra floor space is good. The one on the right most is the most useable as far as space goes. In solid rock you can easily use that one. In soil you would need to install hidden buttresses and/or interior butresses all along the walls for that one to make it safer.

All 3 are doable and all three in solid rock would be just fine.

Are you actually tunneling into very deep areas? Like will there be 15-20 feet of soil and stone above you? Or are you only going so far down as to have 5 feet of material above your ceiling? If you go beyond 20 feet then my next idea is not for this. Anything that is 20 feet of soil above it or less can use corrugated metal culverts.

Normally, you dig the entire place out with a backhoe. Drop in your prefab culvert and fill it over. It is the easiest process to create bunkers and can be welded so there are no seams for water to get in. As in this image, concrete walls, culvert, foam insulation, and Rhino Liner create an extremely durable structure (and expensive) that could actually double as a bomb shelter or hardened bunker if you poured cement all over the top of it for several feet.