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The Unified Soil Classification System ( USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt ):
Hatching ( French: hachure) is an artistic technique used to create tonal or shading effects by drawing (or painting or scribing) closely spaced parallel lines. When lines are placed at an angle to one another, it is called cross-hatching. Hatching is also sometimes used to encode colours in monochromatic representations of colour images ...
Hatch (e-commerce company), an ecommerce platform based in Amsterdam. Hatch Ltd, an engineering and development consulting company based in Canada. Hatch -class lifeboat, formerly operated by the Royal National Lifeboat Institution of the United Kingdom and Ireland. Mini Hatch, a supermini car.
Richard Muther (November 20, 1913 – October 15, 2014) was an American consulting engineer, faculty member at MIT, and author. He developed fundamental techniques used in plant layout, material handling, and other aspects of industrial engineering. [1] He was also known as "Mister Systematic".
Widmanstätten patterns, also known as Thomson structures, are figures of long phases of nickel – iron, found in the octahedrite shapes of iron meteorite crystals and some pallasites. Iron meteorites are very often formed from a single crystal of iron-nickel alloy, or sometimes a number of large crystals that may be many meters in size, and ...
Construction aggregate. Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world.
The standard is divided into three parts: ISO 13567-1:2017 [1] Technical product documentation — Organization and naming of layers for CAD — Part 1: Overview and principles. ISO 13567-2:2017 [2] Technical product documentation — Organization and naming of layers for CAD — Part 2: Concepts, format and codes used in construction ...
Gravel road. Appearance. A gravel road in Asikkala, Finland. A gravel road is a type of unpaved road surfaced with gravel that has been brought to the site from a quarry or stream bed. Gravel roads are common in less-developed nations, and also in the rural areas of developed nations such as Canada and the United States.