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  2. Plywood - Wikipedia

    en.wikipedia.org/wiki/Plywood

    The most common dimension is 1.2 by 2.4 metres (3 ft 11 in × 7 ft 10 in) or the slightly larger imperial dimension of 4 feet × 8 feet. Plies vary in thickness from 1.4 mm to 4.3 mm. The number of plies—which is always odd—depends on the thickness and grade of the sheet. Roofing can use the thinner 16-millimetre (5 ⁄ 8 in

  3. Engineered wood - Wikipedia

    en.wikipedia.org/wiki/Engineered_wood

    Plywood and OSB typically have a density of 560–640 kg/m 3 (35–40 lb/cu ft). For example, 9.5 mm (3 ⁄ 8 in) plywood sheathing or OSB sheathing typically has a surface density of 4.9–5.9 kg/m 2 (11.2 lb/sq ft). [51] Many other engineered woods have densities much higher than OSB.

  4. BS 1088 - Wikipedia

    en.wikipedia.org/wiki/BS_1088

    15 mm +.1/-0.9; 18 mm +.12/-0.98; 22 mm +.16/-1.08; 25 mm +1.8/-1.16 From the above we can assume that 6 mm material will arrive at thickness' between 6.04 mm and 5.35 mm. Face Veneer thickness -- For any three-ply construction, which applies to 3 and 4 mm material, each face veneer shall be not thinner than 1/8 of the total thickness of ...

  5. Densities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Densities_of_the_elements...

    (near r.t.) 1532 kg/m 3: LNG (at r.t.) 1.532 g/cm 3: CRC (near r.t.) 1.53 g/cm 3: 38 Sr strontium; use: 2.64 g/cm 3: WEL (near r.t.) 2630 kg/m 3: LNG (at r.t.) 2.64 g/cm 3: CRC (near r.t.) 2.64 g/cm 3: 39 Y yttrium; use: 4.472 g/cm 3: WEL (near r.t.) 4472 kg/m 3: LNG (at r.t.) 4.472 g/cm 3: CRC (near r.t.) 4.47 g/cm 3: 40 Zr zirconium; use: 6. ...

  6. Medium-density fibreboard - Wikipedia

    en.wikipedia.org/wiki/Medium-density_fibreboard

    MDF is typically made up of 82% wood fibre, 9% urea-formaldehyde resin glue, 8% water, and 1% paraffin wax. [4] The density is typically between 500 and 1,000 kg/m 3 (31 and 62 lb/cu ft). [5] The range of density and classification as light-, standard-, or high-density board is a misnomer and confusing. The density of the board, when evaluated ...

  7. Area density - Wikipedia

    en.wikipedia.org/wiki/Area_density

    The area density (also known as areal density, surface density, superficial density, areic density, mass thickness, column density, or density thickness) of a two-dimensional object is calculated as the mass per unit area. The SI derived unit is the "kilogram per square metre" (kg·m −2).

  8. Density system unit unit-code symbol or abbrev. notes sample default conversion combination output units Metric: kilogram per cubic metre: kg/m3 kg/m 3: 1.0 kg/m 3 (1.7 lb/cu yd)

  9. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    Small granite pillars have failed under loads that averaged out to about 1.43 ⋅ 10 8 Newtons/meter 2 and this kind of rock has a sonic speed of about 5.6 ± 0.3 ⋅ 10 3 m/sec (stp), a density of about 2.7 g/cm 3 and specific heat ranging from about 0.2 to 0.3 cal/g °C through the temperature interval 100-1000 °C [Stowe pages 41 & 59 and ...