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  2. Bituminous waterproofing - Wikipedia

    en.wikipedia.org/wiki/Bituminous_waterproofing

    Felt paper is available in several grades, the most common being Type 1—commonly called 15-pound (15#) or No. 15 (#15)—and Type 2—commonly called 30-pound (30#) or No. 30 (#30). The weight designations originated with organic base felt weighing 15 or 30 pounds per 100 sq. ft. (6.8 kg or 14 kg per 9.3 m 2 ).

  3. Building material - Wikipedia

    en.wikipedia.org/wiki/Building_material

    hardwood plywood & veneer 15,190 35.3 lime 1,920 4.5 mineral wool insulation 12,600 29.3 primary aluminum 80,170 186.5 softwood plywood & veneer 3,970 9.2 stone 1,430 3.3 virgin steel 10,390 24.2 wood lumber 2,700 6.3

  4. Lumber - Wikipedia

    en.wikipedia.org/wiki/Lumber

    As previously noted, less wood is needed to produce a given finished size than when standards called for the green lumber to be the full nominal dimension. However, even the dimensions for finished lumber of a given nominal size have changed over time. In 1910, a typical finished 1-inch (25 mm) board was 13 ⁄ 16 in (21 mm). In 1928, that was ...

  5. Pressed wood - Wikipedia

    en.wikipedia.org/wiki/Pressed_wood

    The creation of pressed wood begins with the veneers [2] being placed in a rotary dryer. [3] This dryer is typically heated with steam at around 204 °C (400 °F). This process prepares the veneers for the humidifying process in which the veneers are then placed into humidification chambers.

  6. Molded plywood - Wikipedia

    en.wikipedia.org/wiki/Molded_plywood

    Molded plywood is the term for two- or three-dimensionally shaped products from multiple veneer layers that are glued together through heat and pressure in a pressing tool. The veneer layers are arranged crosswise at an angle of 90 degrees.

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    mail.aol.com

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  8. Quarter sawing - Wikipedia

    en.wikipedia.org/wiki/Quarter_sawing

    Quarter-sawn boards have greater stability of form and size with less cupping (compared to flatsawn boards), shrinkage across the width, shake and splitting, and other good qualities. [1] In some woods such as oak , the wood grain produces a decorative effect which shows a prominent ray fleck, while sapele is likely to produce a ribbon figure .

  9. Medium density overlay panel - Wikipedia

    en.wikipedia.org/wiki/Medium_density_overlay_panel

    Medium density overlay panel, or MDO panel, is a paintable surface made of plywood with a weather-resistant resin overlay bonded to the wood by heat and pressure. The overlay, which has at least 27% resin content, [1] resists water, weather, wear and degradation. A similar product with a more rugged, smoother surface is called high density ...