#video by #Practical-Engineering on #building #tunnels #underground. Almost entirely talking-head filler and stock footage, though there’s a chart plotting unsupported roof span against “stand up time” at 10'17", with “competent rock” of high rock mass rating being able to stand up without support for a long time, not even rock bolts (anchors), much less more advanced supports. #digging
on 02026-02-18#video by "ModernHillbilly" about #mining #tunnels #underground. #toread #digging
on 02026-01-16#digging an #underground 1-bedroom apartment #dwelling. Lots of talking-head filler, like most #Kevin-Builds #video productions. Useful datum: some garage-door panels are steel-faced sandwich panels with a styrofoam interior. He’s using a dump-truck trailer, backhoe, etc., so this is far from bushcraft. Bit of a Minecrafty feel as he circular-saws the legs off his just-crafted table, so it won’t be so tall, while waiting for the pizza to get done in the oven. The plate-steel culvert, canned food, and Tang are less Minecrafty. He discusses but does not show his future plans to put in drain tile “with a sock on it so the sediment don’t get into it” to drain water from below the shelter. Also he put down a tarp under the surface dirt to keep rain from soaking into the shelter from the top, which he did sort of show. #stealth-camping
on 02024-04-06