Questions tagged [building-physics]

The physics of buildings, specifically thermal conduction, convection, & radiation; heating and cooling; ventilation; transmission and management of water vapour & pollutants

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Windproof open doors room design

I live somewhere where it's relatively warm the entire year (around 10ºC is the coldest you'll get in some days during a normal winter). I am dreaming of a house design that I intend to build in the ...
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1answer
89 views

Could Tesla have REALLY shaken a building with a little oscillator?

I came across this story while reading about Nikola Tesla ground-power scheme. Supposedly, he created a little oscillator that could be plugged into the ground, tuned to the right (resonant) frequency,...
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Do concealed door closers exacerbate wear on a door's hinges?

Not being of an engineering background, I was first inclined to think that a door closer would reduce horizontal load on all hinges and not contribute any support in the vertical dimension. However, ...
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82 views

How to maintain a static negative pressure in a valve?

My target is to create a valve with multiple inlet capillaries. And my output is a pipe of a larger diameter. I do not want to use any electrical systems, and at the same time, I want to maintain ...
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2answers
78 views

How do I measure max oscillation of building using accelerometer?

For my school project, I am trying to measure the effect of a mass damper by changing the length of the string (that carries the mass), my setup is similar to the following video: https://youtu.be/...
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1answer
44 views

When does window insulation have more impact than attic?

Is there any way to determine either empirically or by convention a rule-of-thumb when one should spend money on insulating windows rather than insulating the attic of a house or building to keep it ...
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1answer
66 views

Has anyone achieved significant energy savings by increasing the cooling setpoints in retrofit office buildings, in practice?

I have a simulation based research vs. practical experience type question: There are a number of academic research papers available which claim 20% to 40% cooling energy savings by increasing the ...
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1answer
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Rubber Band for Belt in Belt Drive system

Looking to drive a series of belts for lateral translation using a series of pallet bands (92" rubber bands about 1" wide). Approximately 16 bands would be driven by a singular band as illustrated (...
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3answers
66 views

Tensile Force on Line of Bolts

I'm presented with a problem requiring some analysis to determine if an antenna bracket mounted to a concrete blockwork wall is sufficiently strong enough to endure a wind load given the known surface ...
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0answers
17 views

Which will be stronger for securing a cantilever umbrella in a deck

I am securing a cantilever umbrella baseplate to a deck. The decking timber will be reinforced with a pine nog between the deck joists. The options that I have are to use 10mm stainless steel coach ...
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1answer
117 views

What does Leonardo da Vinci mean in his statement on arches?

I was recently reading some of Leonardo da Vinci's notes on architecture. One passage on arches states: An Experiment to show that a weight placed on an arch does not discharge itself entirely on ...
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How to estimate the physical parameters of 40% Cu + 60% Mo alloy?

I need to know, or estimate the physical characteristics of the alloy which consists 40% copper and 60% molybdenum. I know only: Density: $9.62 \frac{g}{cm^3}$ Thermal conductivity: $223 \frac{W}{m·K}...
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126 views

can ceramic be used as a building material?

From what I read, concrete has much lower compressive strength than ceramics. So why aren't we using ceramics to build? Is it because ceramic failure is difficult to predict? Because it's hard to ...
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1answer
35 views

Is it just surface area alone that causes bridges to freeze?

Scenario: Object 1, a bridge freezes over do to the surface area exposed to the below freezing air. Object 2 has the same surface area exposed to the same air, but its base sits on the ground that is ...
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2answers
89 views

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

I played some video games with beautiful environments filled with buildings which can't be found in the real world. And so I'm wondering, would such buildings be even realistically possible to exist ...
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calculating energy usage with measuring the temperature

I am an electrical engineer working on a project. My goal of this project is to make an IoT solution where I continuously measure the temperature of room in a building. I want to calculate the amount ...
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2answers
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How to make a pulley system with a mechanical advantage of 0.5 [closed]

Problem Hi I was working for an engineering club and we needed to do this as soon as possible: We wanted to make a pulley system with a mechanical advantage of 0.5 I know that we have to do ...

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