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Author Topic: Physical properties of common building material  (Read 6636 times)

Sigert

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Re: Physical properties of common building material
« Reply #15 on: March 02, 2009, 09:34:49 pm »

Great stuff. Some data available there aswell. Let's see if it matches out to other sources.

I should realy stop reading forums at 3:30 at night. Sleep tight guys... ZZZzzz
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Sigert

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Re: Physical properties of common building material
« Reply #16 on: March 03, 2009, 07:06:35 am »

List of common building materials so far:
-Brick
-Concrete
-Mortar
-Gypsumboard
-Glass
-Fiberglass
-Wood OSB
-Wood MDF
-Wood Plywood
-Wood Strawboard
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andrebrito

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Re: Physical properties of common building material
« Reply #17 on: March 03, 2009, 03:02:39 pm »

For curiosity, in buidig acoustics, you use R(w)+C or R(w) + Ctr according to the type of outside noise, if it has low frequency content or not
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Sigert

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Re: Physical properties of common building material
« Reply #18 on: March 03, 2009, 05:38:48 pm »

I can't find much up-to-date info on either correction value. Are they still in use?
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andrebrito

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Re: Physical properties of common building material
« Reply #19 on: March 03, 2009, 06:25:00 pm »

Yes, they are and at least where I live they are used for the facade building.

What happens is that if you have the values of sound insulation over frequency you can calculate the Rw and C or Ctr
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franman

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Re: Physical properties of common building material
« Reply #20 on: March 03, 2009, 09:07:51 pm »

Sigert wrote on Tue, 03 March 2009 07:06

List of common building materials so far:
-Brick
-Concrete
-Mortar
-Gypsumboard
-Glass
-Fiberglass
-Wood OSB
-Wood MDF
-Wood Plywood
-Wood Strawboard



Fiberglass is toooo broad a material.. many, many submaterials within this broader heading, and they each have unique acoustic properties.. Rigid Fiberglass by density and thickness, Fiberglass batt by thickness, Mineral wool by thickness and density.. on and on and on... FWIW

We also have a database assembled from many texts and other sources over the years.. Use it on a daily basis for everything from calculating mass or structures to be floated, to calculating RT and for plugging in values in various simulations...
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Sigert

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Re: Physical properties of common building material
« Reply #21 on: March 04, 2009, 09:36:17 am »

I adapted the list a bit.

Parameters:
-Density
-Resillience/Elasticity
-Aerial sound transmission loss (Rw) + correction factors 'C' and 'Ctr'
-Solidian sound transmission loss (Lw)
-Thermal conductivity
-Thermal resistance
-Fire rating (General, Smokeproduction and Fallout)

Materials:
Cement, Portland
Concrete, Gravel
Concrete, limestone & Portland
Glass, window glass
Metal, Aluminium
Metal, Cast iron
Metal, Framing steel
Other, Gypsum board
Sand, Dry sand
Stone, Limestone
Stone, Marble
Stone, Red brick
Wood, Douglas fir
Wood, Strawboard
Wood, MDF
Wood, OSB
Wood, Plywood
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Sigert

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Re: Physical properties of common building material
« Reply #22 on: March 06, 2009, 06:52:57 am »

Density didn't seem to hard to find out. Except MDF, Plywood, OSB and fiberboard. From what I understand, their density is similar to that of the wood they're made of. Anyone have any info/experience to support this?

What's the difference between MDF and fibreboard anyway? Trying to avoid faulty translations.
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tom eaton

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Re: Physical properties of common building material
« Reply #23 on: March 06, 2009, 08:33:19 am »

I'm not sure what plain "fiberboard" is, as here in the states that would be close to an acoustic fiber sheet (a brown semi rigid 4x8 panel).

Second pic down here:
http://www.rdbmagazine.com/publication/article.jsp?pubId=1&a mp;id=4&pageNum=4

MDF (Medium Density Fiberboard, sometimes called particle board) is sawdust and glue, and is denser than plywood.  Chipboard is made of roughly 1"x1" flakes of wood compressed and glued... less dense than MDF.  OSB (oriented strand board) is between the two density wise, and has more structural integrity than either.

OSB is generally tongue and groove, and won't fall apart when wet like MDF does.  

tom



Sigert

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Re: Physical properties of common building material
« Reply #24 on: March 06, 2009, 02:18:37 pm »

These are the times I wish the whole world had only one language. But Esperanto didn't catch on, did it? Smile

What I mean with fiberboard is what we call 'spaanplaat' in Dutch.
http://www.4izons.nl/hubo/images/spaanplaat.jpg
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Sigert

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Re: Physical properties of common building material
« Reply #25 on: March 09, 2009, 10:22:48 pm »

Made a draft, a first version with the data I collected so far. Sorry in advance for not listing sources. They were to numerous. If I made any faulty translations or conversions, please point them out to me.
 http://users.telenet.be/sigertdejean/downloads/physical%20pr operties%20draft01.pdf
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Sigert

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Re: Physical properties of common building material
« Reply #26 on: March 12, 2009, 12:17:51 pm »

Just noticed my last post has a faulty link in it.

Modest update. Some new, some adjusted/corrected.
http://users.telenet.be/sigertdejean/downloads/draft02.pdf]
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Sigert

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Re: Physical properties of common building material
« Reply #27 on: March 16, 2009, 04:18:26 pm »

Contribution, anyone?
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