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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How to build apartment floors/ceilings to not transfer sound?
How do new apartment buildings build their floors/ceilings to prevent the transfer of sound between people living above/below each other?
Note: I'm not asking about how to soundproof an existing ...
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"Increasing the water pressure" in the old pipes in the Palace of Knossos
In the Palace of Knossos, Crete, Greece there is an old piping system partially preserved, with the following commentary:
Series of clay pipes with one end narrower than the other so that they could ...
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How to go about designing a window that can selectively allow light, air, and sound in depending on the occupant's preferences?
The usual combination of window + blind today allows occupants to pick between allowing in external light, blocking external light, allowing external air exchange, blocking air exchange.
I'm curious ...
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Techniques to make residential buildings more blast resistant
There are generally two approaches:
First: use stronger materials (e.g. thicker RCC with fibres, go underground, etc).
Second: for any given material, use a superior design.
The First approach is ...
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How does a church built from stones survive 70 years under water?
Following the recent news about the Sau reservoir in Spain, the draught revealed an 11-century stone church which has been under water for 70 years since 1962 when the reservoir was built.
How is it ...
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Simulating falling and moving wooden house?
In Sweden, a newly constructed 150 m2 wooden residence built atop a mud foundation has exhibited significant structural instability. Over a period of 500 days, the house has settled by 90 millimeters ...
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How did gothic church architects/builders properly scale up their models to full size churches?
In this video the author explains how ancient church builders used models to determine the proper shape and order of installation of architectural elements in gothic churches.
From the little I know, ...
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How to design safely collapsing buildings?
Background—Currently, buildings seem to be designed to be strong enough to not fall upon dangerous events, such as earthquakes. This makes them expensive, and out of the reach of poor places.
Poor ...
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How to make a galilean cannon with balls falling/rebounding straight
Here is what I mean by galilean cannon, simply letting balls fall, but hard to experiment though... First, I tried to drop 2 balls with my hands, but balls do not rebound straight and I get enormous ...
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Washing machine in apartment
I live on a second floor of 4 story apartments building and I'm planning to change my old washer+dryer tower for a new one, however it is bigger and heavier. I'm worried that the weight could cause a ...
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Can a buckling steel column fracture on multiple points?
When a column buckles, then yields, and finally fractures fractures, along the most stressed point, this will initially reduce the axial and bending strains along other points. The apparent conclusion ...
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How to compute the resistance of this metallic part (steel angle iron), for a joist fitted in an I-profile beam?
Let's say we have an oak joist (15 cm x 15 cm x 370 cm), which is "fitted" in the profile of an I-profile beam (height 140 mm, width 66 mm), and the surface where the joist is laid is too ...
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Doubt about Reynolds number formula
In fluid dynamics, when I have to compute Reynolds number, I was taught to differentiate between two cases: $$ 1)\space \frac{\rho\cdot v\cdot d}{\mu}$$ or $$2)\space \frac{v\cdot d}{\mu}$$
but, why ...
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Mechanism to even out force from linear motion
Not sure exactly how to explain this, but I am looking to use a threaded rod connected to a motor, to push and pull open a gate valve. My idea for this is to attach a nut to the handle of the pull/...
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Advice needed on how to cool 50 ml liquid from 60 °C to 30 °C
In Short: I'm working on a project where we need to cool 50 ml of liquid from 60 °C to 30 °C or 20 °C. The liquid will be in a 150 ml copper container with an open top.
Due to the lack of skills in ...
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