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In 1921 the Building Code Committee and in 1925 a report was issued titled "Recommended Practice for Arrangement of Building Codes" which consisted of 19 chapters, including Chapter 15 on plumbing. This report was known informally as the "Hoover Code" as it was issued under the signature of the Secretary of Commerce Herbert Hoover.
Brasenia is cultivated as a vegetable in China (where it is known as chúncài 莼菜) and where it is used in Hangzhou in the well-known local speciality "West Lake Water Shield Soup" [15] and in Japan. The mucilage it produces has been found to have anti-algal and anti-bacterial properties that may be useful as a natural weed control. [16]
Cabomba caroliniana (fanwort; Carolina water-shield) Index of plants with the same common name This page is an index of articles on plant species (or higher taxonomic groups) with the same common name ( vernacular name).
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The classical mathematical puzzle known as the three utilities problem or sometimes water, gas and electricity asks for non-crossing connections to be drawn between three houses and three utility companies in the plane. When posing it in the early 20th century, Henry Dudeney wrote that it was already an old problem.
At a building the wires enter a conduit, a protective metal pipe, and the weatherhead is a waterproof cap on the end of the conduit that allows the wires to enter without letting in water. It is shaped like a hood , with the surface where the wires enter facing down at an angle of at least 45°, to shield it from precipitation.
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