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So you want to build a tunnel

practical.engineering

41–50 of 119 posts

Re: So you want to build a tunnel

#41
post #2

When my wife was diagnosed with cancer and eventually went into remission, I didn’t really process what was happening at first. I was completely focused on getting her through it. The grief hit me later. What helped me more than anything was going out into the garden and digging. I made sure to do it safely, since I know it can be risky, so I dug wide and with wooden supports, but there was something about just diggi…

How much did you excavate?

Re: So you want to build a tunnel

#43

Great content for the upcoming drone wars and the inevitable tunnels that will be built for troop and matériel movements

What makes you think a tunnel would be safe? Just need to re-purpose this little guy: https://blog.sintef.com/digital-en/inachus-project-robot-sea...

the operator of those would get hit by an aerial drone from one of the other tunnel exits

Re: So you want to build a tunnel

#44
post #35

Earlier quoted context omitted.

a network of tunnels and sensors is easier to defend than a open space exposed position where drones can see you from miles away, I guess that makes tunnels better for defense

Makes me think the noble houses of Westeros should have dug tunnels to foil the Targaryen dragon advantage.

they did - that's why dorne was never conquered

Re: So you want to build a tunnel

#46
post #2

When my wife was diagnosed with cancer and eventually went into remission, I didn’t really process what was happening at first. I was completely focused on getting her through it. The grief hit me later. What helped me more than anything was going out into the garden and digging. I made sure to do it safely, since I know it can be risky, so I dug wide and with wooden supports, but there was something about just diggi…

[dead]

Re: So you want to build a tunnel

#47

Earlier quoted context omitted.

What makes you think a tunnel would be safe? Just need to re-purpose this little guy: https://blog.sintef.com/digital-en/inachus-project-robot-sea...

a network of tunnels and sensors is easier to defend than a open space exposed position where drones can see you from miles away, I guess that makes tunnels better for defense

Given that we have bunker busters that will travel beyond the horizon at hypersonic speeds and bust 200 feet of reinforced concrete...

I don't think any fixed installation is particularly easy to defend?

Also, I'll grant that a drone can see you from miles away, but don't you think any one of a large and growing number of satellites can spot your massive earthworks from tens and hundreds of miles away for the months or years it takes you to construct?

Re: So you want to build a tunnel

#49
post #30

Earlier quoted context omitted.

> Basically nobody ever died from leaky pipes I know you're probably intending to only remark on leaky water pipes, but: The New London School explosion was caused by a leaky pipe. It killed 295 students and teachers, and led to the inclusion of smelly thiol in natural gas, as well as the Texas Engineering Practice Act. https://en.wikipedia.org/wiki/New_London_School_explosion

Even leaky water pipes kill people - just google Legionnaires disease.

A drip or stream from a leaky pipe isn't gonna do it. You need to get the bacteria into the respiratory tract to get legionaires disease. And even then a specific temperature water is necessary for it to grow.

A dehumidifier (or an HVAC system, which is where the name of the disease came from) is more likely to give you legionnaires disease than even the most substandard plumbing.

Re: So you want to build a tunnel

#50
post #42
post #38

At this point we have too much free time on our hands x_x

google ai estimates that 4.7 billion hours have been spent in minecraft. At least these are real :)

I mean that's hardly that bad.In the 17 years since release, ~7 billion humans will have had 1,042,440,000,000,000 hours of free time meaning society has spent 0.000451% of it's time on minecraft in the last 17 years.

Which is rounded well out beyond significant figures (as we've only got the one in 7 billion people). Rounded, we've spent effectively no time on minecraft.

Sounds about right?

eta: that's 4.51 of every million seconds

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