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Albert Speer
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Puerile Polemic
Mar 1999 time: 00:28
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I heard that in the middle east and latin america, a lot of houses are built out of dried mud and tile. apparently, this construction (aside from being real cheap) cools the interior in the summer and keeps in fairly warm in winter...
so why are all the houses here in the US made out of brick?
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Albert Speer
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Puerile Polemic
Mar 1999 time: 00:28
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granite is radioactive?
what? for real there's houses that are not brick? I dont think I've ever not seen a brick house... every single house, rowhome, and apartment building in philly is made out of brick except for maybe some of the downtown sky-scrapers
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Albert Speer
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Puerile Polemic
Mar 1999 time: 00:28
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Monolith:
Why's that?
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Albert Speer
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Puerile Polemic
Mar 1999 time: 00:28
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ah... Temple is in Philly...
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The Mad Monk
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of Ice Cream
Mar 2000 time: 23:28
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quote: Originally posted by Albert Speer
Oerdin:
Wood houses don't collapse due to earth quakes but brick ones do? |
Yep.
Don't get me wrong -- both can fall, depending on the quality of construction and the strength of the quake.
Wood frame houses (and steel frame buildings) are able to flex, which allows them to 'ride' out the waves.
Brick buildings have several things going against them:
- brittleness of the bricks themselves, which means they're much more likely to fracture when hit with a wave
- the fact that bricks and mortar are two different substances, with different physical characteristics which will cause them to respond to waves differently -- in terms of flexing, rates of transmission, angles of reflection and refraction (is that the term I'm thinking of, Oerdin? it's been so long) -- and which, in turn, increases the effects of all the planes of weakness brick buildings naturally have (that is, each and every place brick meets mortar).
- the heavier weight of overlying bricks makes any displacement of bricks in lower layers much more significant.
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:) Smiley
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USCA, Berkeley
Feb 2001 time: 21:28
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Wood frames are most common in residential building because it's cheap to buy and cheap to work with, the USA has lots of trees, and its aesthetically pleasing. Wood also has a special place in the American culture, which invented things like the log cabin, the balloon-frame house, and the do-it-yourself house kit. Wood framing also allows for easier modification of the house later on, something you can't do with concrete. Wood can also be prefabbed and hauled into place on a trailer. Structurally, wood has one of the highest strength-to-mass ratios of any material (a wood beam is stronger than a steel beam of the same weight) and properly cared for will last the expected lifetime of any American house (30-50 years).
Older US cities have lots of brick buildings due to fire codes, in the suburbs houses are far apart so wood is OK.
Most other places in the world don't have a big supply of trees to chop down locally, so concrete is used instead. Most commercial construction in USA is done with concrete cinderblock these days, though there are many wood framed businesses as well.
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