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2. BS 1088 - Wikipedia

   en.wikipedia.org/wiki/BS_1088

   Face veneers must be free of knots other than "sound pin" knots, of which there shall be no more than six(6) in any area of one(1) square foot, and there can be no more than an Average of two(2) such knots per square foot area over the entire surface of the plywood sheet. The veneers must be reasonably free from irregular grain.

3. Board foot - Wikipedia

   en.wikipedia.org/wiki/Board_foot

   The board foot or board-foot is a unit of measurement for the volume of lumber in the United States and Canada. [1] It equals the volume of a board that is one foot (30.5 cm) in length, one foot in width, and one inch (2.54 cm) in thickness, or exactly 2.359 737 216 liters. Board foot can be abbreviated as FBM (for "foot, board measure"), BDFT ...

4. Formwork - Wikipedia

   en.wikipedia.org/wiki/Formwork

   Typical widths are between 6 and 10 feet (1.8 and 3.0 m), typical lengths are between 12 and 20 feet (3.7 and 6.1 m), though table sizes may vary in size and form. The major distinction of this approach is that the tables are lifted either with a crane transport fork or by material platform elevators attached to the side of the building.

5. 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) plywood ...

6. Lumber - Wikipedia

   en.wikipedia.org/wiki/Lumber

   For ceilings heights of 8, 9 or 10 feet (2.4, 2.7 or 3.0 ... 5th percentile bending strength in newtons per square millimetre. ... is above 25% on a dry-weight basis ...

7. AOL Mail

   mail.aol.com

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8. Medium-density fibreboard - Wikipedia

   en.wikipedia.org/wiki/Medium-density_fibreboard

   Although similar manufacturing processes are used in making all types of fibreboard, MDF has a typical density of 600–800 kg/m 3 or 0.022–0.029 lb/in 3, in contrast to particle board (500–800 kg/m 3) and to high-density fibreboard (600–1,450 kg/m 3). In addition, MDF typically has an MOR of 40 MPa and an MOE of 3 GPa.

9. Cement board - Wikipedia

   en.wikipedia.org/wiki/Cement_board

   One major disadvantage of cement board is the weight per square foot. It is approximately twice that of gypsum board, making handling by one person difficult. Cutting of cement board must also be done with carbide-tipped tools and saw blades. Due to its hardness, pre-drilling of fasteners is often recommended.