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35 votes

What is the lowest point below sealevel that we have built where a human can go?

I assume you are asking the deepest structure of any sort that exists. Here is an infographic : Source : https://alansfactoryoutlet.com/the-deepest-underground-structures-in-the-world/ One mystery ...
r13's user avatar
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17 votes
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What is the lowest point below sealevel that we have built where a human can go?

The Kidd Mine in Ontario, Canada: per the Wikipedia article, it is "the deepest accessible non-marine point on Earth" at "2,733 metres (8,967 ft) below sea level". I found this ...
user3067860's user avatar
16 votes
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What is the term for diagonal bars which are making rectangular frame more rigid?

Braces. They come in a variety of shapes. K frames, X frames, eccentric frames, etc. . . . .
kamran's user avatar
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15 votes

What is the lowest point below sealevel that we have built where a human can go?

If your volunteer is a very small person, maximum shoulder width of 23 cm/9 inches, then the answer is 12,262 metres (40,230 feet) deep in the Kola superdeep borehole in Russia. I can't find the &...
Criggie's user avatar
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8 votes
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What use are those glass panels?

These are fire traps required by code. flames rising up from the initial fire don't get a chance to spread to neighboring areas. The automated fire sprinklers will deploy in a smaller area thus ...
kamran's user avatar
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6 votes

Why don't public transport networks have more routes to each terminal?

The main reason is economics. Who is going to pay for all the additional lines? The other part to this is, will the additional lines have enough passengers to make them profitable and sustainable? If ...
Fred's user avatar
  • 9,687
6 votes

Why don't public transport networks have more routes to each terminal?

Keep drawing combinations. You forgot Østerås to Vestli, Østerås to Bergkrystallen, and every other combination of possible origin and destination. This breaks down in a hurry. By the time you ...
Harper - Reinstate Monica's user avatar
6 votes
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What do they call that elegant triangular scaffolding often used in future-oriented architecture?

The general term for these structures in 3-d is a space frame. "Just making a triangle array" is a pretty good starting point, because three bars forming a triangle make a rigid structure without any ...
alephzero's user avatar
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5 votes

Why did they build a sarcophagus over Chernobyl instead of pouring concrete over the building?

The likely reason is that simply pouring concrete over it would not have contained it. The site is smoldering and emits gases of various types. It also has voids and shifts around, various areas ...
Wallace Park's user avatar
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5 votes
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How do I build a miniature concrete house?

Concrete isn't a good material for such a small model. I would suggest foamboard. You can get it at craft stores. If you can't find half inch thick material, laminate two layers of quarter inch board. ...
Eric S's user avatar
  • 915
4 votes

Why did they build a sarcophagus over Chernobyl instead of pouring concrete over the building?

The original sarcophagus built around 1986 has some issues and it was estimated in 1988 that it would only last 20-30 years (here we are). Check out this link that explains some of the main issues ...
willpower2727's user avatar
4 votes

Are there standard terms that correspond to the anatomical axes, planes, and directions?

This answer comes from my experience in mechanical engineering, a structural engineer might have a different perspective. It is difficult to come up with a standard set of terms for planes or axes in ...
BarbalatsDilemma's user avatar
4 votes
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Natural ways for passively cooling/heating a home?

There are many ways that one can achieve natural cooling and heating. However, the best solutions are very dependent on the situation. Also, the problem with most of these solutions is that you'd need ...
NMech's user avatar
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4 votes

What is the term for diagonal bars which are making rectangular frame more rigid?

The generic term is Bracing. You will often find it further qualified as Cross Bracing, Diagonal Bracing or Triangular Bracing, depending on the whim of the person doing it.
Neil_UK's user avatar
  • 405
4 votes

What is the lowest point below sealevel that we have built where a human can go?

The point you are looking for is very likely located in a mine. You could check the list of deepest mines by depth below ground, and then find and subtract the surface elevation for each. (This still ...
w123's user avatar
  • 141
3 votes

What are the limits on building very high buildings using certain materials and architectural style?

The tallest masonry building erected is the Philadelphia City Hall . It is 548 feet high. The issue with building masonry structures is the walls have to support the weight of the building and the ...
Fred's user avatar
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3 votes
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From the viewpoint of a civil engineer, what was the purpose of this bridge?

The location makes sense from a civil engineering perspective. The bridge has to span the river channel without being washed away during flooding events. A narrow, steep canyon works well for this ...
PJNoes's user avatar
  • 218
3 votes

Light frame at tunnels and bridges

Such measures do exist, but they don't always prevent careless drivers from ignoring the measures and crashing into low bridges. One bridge that I know of has been hit at least 100 times and has been ...
Fred's user avatar
  • 9,687
3 votes

Selectively rotating (engaging/disengaging) one of 80 couplings on a small shaft?

A mechanical solution using movable rods: Have 7 rods with pieces of rubber around them. The rods should be positioned so that you can move them leftwards or rightwards. When the rubber piece touches ...
jpa's user avatar
  • 1,953
3 votes

Natural ways for passively cooling/heating a home?

In the middle east and specifically Iran they have used passive air conditioning for centuries. They build the neighborhoods with the houses tightly packed next to each other, reducing the exposure ...
kamran's user avatar
  • 22.5k
3 votes

Why did they move ancient Egyptian temples to prevent them from water damage instead of encircling them with a dam?

Shielding them by a dam would have been more costly. And being hidden under a 65 meters deep wall into the water of the Aswan dam would make them visually disappear, and lose their glory. As it is now ...
kamran's user avatar
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3 votes
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What is the name of a half wall with posts on top that divides a space into two?

A non jargon terminology (i.e. non scientific architectural) would be permanent room divider or wall divider or plain divider. Probably the proper architectural terminology is mullion is a vertical ...
NMech's user avatar
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2 votes
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Does the use of the catenary in an inverted weight model imply a more solid structure?

A catenary is the shape a cable will hang in under self-weight. Cables only work in tension, not in bending. If you take this shape and flip it upside down, then (due to gravity now operating in the ...
AndyT's user avatar
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2 votes

Selectively rotating (engaging/disengaging) one of 80 couplings on a small shaft?

Depending on the rotational speed and the torque required, you may be able to use something that resembles a pin tumbler lock (I can't put more than 2 links in a post so no link to Wikipedia..) The ...
AutoDude's user avatar
  • 121
2 votes

What's the definition of concept of inversion in architecture? Can you also give some example for this and explanation?

Hard to say without knowing the material covered in the course. However, it could be referring to Robert Hooke: As hangs a flexible cable so, inverted, stands a rigid arch. Which describes a way ...
atom44's user avatar
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2 votes

Are there standard terms that correspond to the anatomical axes, planes, and directions?

For aviation, aerospace, and naval (and to a lesser degree automotive) engineering, the three axes are pitch, yaw and roll axes - with the names pitch, yaw and roll corresponding to rotational motion ...
SF.'s user avatar
  • 6,105
2 votes

Are there standard terms that correspond to the anatomical axes, planes, and directions?

In engineering there are four views, or axes that I can think of: longitudinal - which is parallel to the longest vertical side of an object, cross-sectional - which is parallel to the shortest ...
Fred's user avatar
  • 9,687
2 votes

Huge gap between ceiling and floor above

the gap is usually referred to as a mezzanine. It is through the mezzanine that computer cabling is strung and distributed into the cubicles above and below it via holes drilled through the floors and ...
niels nielsen's user avatar
2 votes
Accepted

How to calculate the dimensions of an ellipse in a multi-view projection

This is a simple trigonometric exercise. You really only need the "front" view to solve this. Here's the cleaned up version of that view (I have omitted the holes for now, and I assumed the right-...
Wasabi's user avatar
  • 13.1k
2 votes

Where can I find a list of building codes to put on a set of blueprints for a addition

The same Building Department that you eventually submit your plans to. In California other than very small single story additions, you find it more practical to contract a professional. Any addition ...
kamran's user avatar
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