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I'm in need of some values (tables) about heat resistance, conductivity, and such for different types of building materials. Any good sites out there?

2)

I have the following equation for calculating Grashofs number:

[tex]

Gr = g \cdot \beta \cdot \Delta t \cdot {{l^3 } \over {v^2 }}

[/tex]

All well and good, but the [itex]\beta[/itex] is described as being the "volume expansion coefficient", something I have never heard of before. The unit is 1/C, where C is Celsius. This wouldn't be a problem if I just knew what this number actually is, or where to find it. Any ideas?

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# Heat conductivity and Grashofs number

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