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The process of grading a soil is in accordance with either the Unified Soil Classification System or the AASHTO Soil Classification System. The steps in grading a soil are data collection, calculating coefficients of uniformity and curvature, and grading the soil based on the grading criteria given in the used soil classification system. [1]
English: Wentworth grain size chart from United States Geological Survey Open-File Report 2006-1195, “Surficial sediment character of the Louisiana offshore continental shelf region: A GIS Compilation” by Jeffress Williams, Matthew A. Arsenault, Brian J. Buczkowski, Jane A. Reid, James G. Flocks, Mark A. Kulp, Shea Penland, and Chris J. Jenkins
A sieve analysis (or gradation test) is a practice or procedure used in geology, civil engineering, [1] and chemical engineering [2] to assess the particle size distribution (also called gradation) of a granular material by allowing the material to pass through a series of sieves of progressively smaller mesh size and weighing the amount of material that is stopped by each sieve as a fraction ...
With the falling number test, so-called weather- or sprout-damaged wheat or rye, which adversely affects bread-making quality, could be detected at the grain silo intake within a few minutes. Sprouting , or pre-harvest germination , is caused by damp or rainy weather conditions during the final stage of maturation of the crop.
In agriculture, grain quality depends on the use of the grain.In ethanol production, the chemical composition of grain such as starch content is important, in food and feed manufacturing, properties such as protein, oil and sugar are significant, in the milling industry, soundness is the most important factor to consider when it comes to the quality of grain.
The United States Grain Standards Act (USGSA) of 1916 (P.L. 64-190), as amended (7 U.S.C. 71 et seq.), authorizes the Grain Inspection, Packers and Stockyards Administration to establish official marketing standards (not health and safety standards) for grains and oilseeds, and requires that exported grains and oilseeds be officially weighed and inspected.
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):
The Grain Inspection, Packers and Stockyards Administration (GIPSA) was an agency of the United States Department of Agriculture that facilitates the marketing of livestock, poultry, meat, cereals, oilseeds, and related agricultural products, and promotes fair and competitive trading practices for the overall benefit of consumers and American agriculture.