Skip to main content

New answers tagged

1 vote

Are mutli-story structure slabs poured on-center?

Multi-story buildings ( and any other building for that matter) are designed according to the code governing such Buildings. For example, in California, The minimum height of ceilings shall be 8 feet (...
kamran's user avatar
  • 22.5k
0 votes

Running utilities into bomb shelter / bunker

You use off-the-shelf components for industrial explosion-proof walls like in flour mills, armories, bomb bunkers, etc. Most will be air-gapped as well if you are serious about this stuff. Run all ...
Phil Sweet's user avatar
  • 4,765
0 votes

Running utilities into bomb shelter / bunker

To minimize damage to the concrete/material surrounding any proposed holes, and depending on the thickness and nature of the material being drilling through, diamond saws or drill bits would best be ...
Fred's user avatar
  • 9,687
3 votes

How is the city power grid routed and connected to individual locations such as houses?

Your house (and those of your nearby neighbors) are served by a transformer which takes the local high-voltage transmission line (10 to 20 kilovolts) and produces 110 volt AC and 220 volt AC which is ...
niels nielsen's user avatar
0 votes

How is the city power grid routed and connected to individual locations such as houses?

As a new build site is prepped, the new power lines to extend the existing grid are laid. Once ready, either connections are made live (often based on the voltage) or that portion of the grid is shut ...
Solar Mike's user avatar
  • 15.9k
3 votes

What is the formula to define the flexural strength of an upright cylinder?

You are reading the symbol $ \sigma \ $ wrong. It means stress, not strength. Stress means tension/compression force per unit of area. And it makes sense a thicker member experiences less stress ...
kamran's user avatar
  • 22.5k
1 vote

Why do period and damping ratio affect acceleration?

The goal in designing structures to resist earthquakes is to prevent resonance of the building vibration with ground vibration. Two ways to achieve this are to design for a natural frequency of the ...
kamran's user avatar
  • 22.5k
-1 votes

Wind Pressure on Chimney

I can help you with this problem. Let's break it down step by step. Given: Height of chimney: 18m External dimensions of the square section: 2.4m x 2.4m Internal hollow square section: 1m x 1m Unit ...
Ankush Shivhare's user avatar
2 votes

"Increasing the water pressure" in the old pipes in the Palace of Knossos

I agree with David here, it is probably a problem in translation or in the understanding of the author in Greek, which I don’t speak. It should probably read “The fitted pipes allowed for a ...
Rich's user avatar
  • 296
1 vote

"Increasing the water pressure" in the old pipes in the Palace of Knossos

It looks like a translation ambiguity. Having well-fitting pipe joints allows the use of higher pressure. Also, there is always flow reduction as a result of joints, having good joints reduces the ...
david's user avatar
  • 821

Top 50 recent answers are included