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The American Wood Protection Association (AWPA) recommends that all treated wood be accompanied by a Consumer Information Sheet (CIS), to communicate safe handling and disposal instructions, as well as potential health and environmental hazards of treated wood.
Until 2003, most wood sold in the U.S. for outdoor use was treated with chromated copper arsenate (CCA), an arsenic-based preservative. [6] By late 2001, three national manufacturers of children's backyard play sets agreed to a CEH legal settlement calling for them to stop using arsenic in pressure-treated lumber within three months. [7]
Chromated copper arsenate (CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions.It is used to impregnate timber and other wood products, especially those intended for outdoor use, in order to protect them from attack by microbes and insects.
Wood to be used for construction work is commonly known as lumber in North America. Elsewhere, lumber usually refers to felled trees, and the word for sawn planks ready for use is timber. [46] In Medieval Europe oak was the wood of choice for all wood construction, including beams, walls, doors, and floors.
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Provide LEV under the blade slot. To increase the collection area of the hood, add holes (1/8 inch in diameter) in the table around the ot area. [3] To collect wood dust from the saw teeth, place a suction nozzle above the table, at the rear of the w blade. [3] Jointers. Place a hood underneath the machine head. [3] Shapers
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