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2. R-value (insulation) - Wikipedia

   en.wikipedia.org/wiki/R-value_(insulation)

   The R-value is the building industry term [3] for thermal resistance "per unit area." [4] It is sometimes denoted RSI-value if the SI units are used. [5] An R-value can be given for a material (e.g., for polyethylene foam), or for an assembly of materials (e.g., a wall or a window). In the case of materials, it is often expressed in terms of R ...

3. Thermal transmittance - Wikipedia

   en.wikipedia.org/wiki/Thermal_transmittance

   Although the concept of U-value (or U-factor) is universal, U-values can be expressed in different units. In most countries, U-value is expressed in SI units, as watts per square metre-kelvin: W/(m 2 ⋅K) In the United States, U-value is expressed as British thermal units (Btu) per hour-square feet-degrees Fahrenheit: Btu/(h⋅ft 2 ⋅°F)

4. R-value (soils) - Wikipedia

   en.wikipedia.org/wiki/R-value_(soils)

   The R-Value test [1] measures the response of a compacted sample of soil or aggregate to a vertically applied pressure under specific conditions. This test is used by Caltrans for pavement design, replacing the California bearing ratio test. Many other agencies have adopted the California pavement design method, and specify R-Value testing for ...

5. 15 Things You Should Never Buy at a Garage Sale ... - AOL

   www.aol.com/15-things-never-buy-garage-155900245...

   Here are a few items thrifting experts say you should never buy at a garage sale. Related: 14 Valuable Collectibles to Look for in Thrift Stores Games With Pieces

6. AOL - Finance News & Latest Business Headlines - AOL.com

   www.aol.com/real-estate

   Get breaking Finance news and the latest business articles from AOL. From stock market news to jobs and real estate, it can all be found here.

7. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   There are very few door models with an R-value close to 10 (the R-value measures how well a barrier resists the conductive flow of heat). This is far less than the R-40 walls or the R-50 ceilings of super-insulated buildings – passive solar and zero-energy buildings. Typical doors are not thick enough to provide very high levels of energy ...