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A curtain rod, curtain rail, curtain pole, or traverse rod is a device used to suspend curtains, usually above windows or along the edges of showers or bathtubs, though also wherever curtains might be used. When found in bathrooms, curtain rods tend to be telescopic and self-fixing, while curtain rods in other areas of the home are often ...
A curtain rod or traverse rod is a device used to suspend curtains, usually above windows or along the edges of showers, though also wherever curtains might be used. The flat, telescoping curtain rod was invented by Charles W. Kirsch of Sturgis, Michigan, in 1907. However, they were not in use until the 1920s. Kirsch also invented the traverse ...
In 2009, Armstrong's annual net sales total was US$2.8 billion. [15] Matthew Espe became AWI president and CEO in July 2010. [16] In 2011, Armstrong's net sales were $2.86 billion, with operating income of $239.2 million. [17] Armstrong Cabinets was sold by Armstrong World Industries to American Industrial Partners on October 31, 2012.
Metric threaded rods are marked on the end with a color code to define the ISO strength class. The color codes are: [9] Unmarked — 4.6 class (tensile strength = 400 N/mm 2, yield strength 240 N/mm 2) Yellow — 8.8 class (800 N/mm 2, 640 N/mm 2) Green — A2 stainless steel (304) Red — A4 stainless steel (316) White — 10.9 class (1000 N ...
The rod is useful as a unit of length because integer multiples of it can form one acre of square measure (area). The 'perfect acre' [2] is a rectangular area of 43,560 square feet, bounded by sides 660 feet (a furlong) long and 66 feet (a chain) wide (220 yards by 22 yards) or, equivalently, 40 rods by 4 rods. An acre is therefore 160 square ...
The working strength of a tie rod is the product of the allowable working stress and the rod's minimum cross-sectional area. If threads are cut into a cylindrical rod, that minimum area occurs at the root of the thread. Often rods are upset (made thicker at the ends) so that the tie rod does not become weaker when threads are cut into it.
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