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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Why did they move ancient Egyptian temples to prevent them from water damage instead of encircling them with a dam?
Specifically I'm talking about Abu Simbel temple and Philae temple. Which are close to a reservoir created by Aswan dam.
It seems to me easier to build a dam than to move a temple.
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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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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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One dimensional U-Factor Calculation - How to determine indoor / outdoor film resistances
Can someone clarify the ASHRAE Fundamental 2017 (SI Units) (See Below) Indoor and Outdoor film resistances. The manual states that it comes from Table 3 and in the description of table 3 it states &...
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Sun light illumination on a lower floor vs high building closely
there is an investor that wants to build very close to our building. In case we agree, the buildings will stand like on the pictures below, 3 meters apart from each other. I tried to draw them in ...
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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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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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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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Increase in target emission rate (TER) when using a air source heat pump (ASHP) in standard assessment procedure (SAP) calculation
I am running a SAP calculation on a proposed building which will be utilising a 8.5 kW ASHP for space and water heating. I am also running a comparative analysis against a mains gas boiler to show the ...
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Is a single large impact better than several small impacts for breaking ice
I'm designing a device that uses impact to remove ice from sidewalks. I have a question about how to best design the impact mechanism.
I can design it to deliver several light impacts or fewer harder ...
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What is the minimum height of a chimney needed in a camper?
Like a lot of people nowadays, I'm fitting a log fire into the back of a camper van but can't find the minimum height above the roof for the chimney. Ideally, it should be as low as possible for ...
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Why are/were sewers made large enough for somebody to walk down in there?
Today, I have been reading a lot about sewer systems on Wikipedia, in the hope that I would find information or at least photos showing what I think of as sewers, namely somewhere under the streets in ...
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How deep do you have to check for problems underneath a building site?
When you're putting up a new building, you have to check the soil underneath for stability. How deep do you typically have to check? What's the extent of your "due diligence" when ensuring that a ...
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Inertial Forces while analysing forces on a Piston in a Slider - Crank Mechanism?
I get that we are analysing the Piston in a non-inertial frame of reference, but the point of my question is that according to D'Alembert's Principle, whenever an inertial force comes in the line of ...
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Can temperature gradient keep concrete wall below 100% RH in 100% RH atmosphere?
Consider a high and wide concrete wall of say 30 cm thickness, covered with a sheet of vapor barrier on one side, and a sheet of say 30 cm thick and effective insulation on the other side.
The vapor ...
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