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Sci-Tech Dictionary:

settling

(′set·liŋ)

(engineering) The gravity separation of heavy from light materials; for example, the settling out of dense solids or heavy liquid droplets from a liquid carrier, or the settling out of heavy solid grains from a mixture of solid grains of different densities.
(geology) The sag in outcrops of layered strata, caused by rock creep. Also known as outcrop curvature.

 
 
Real Estate Dictionary: Settling

The movement, generally a sinking or shifting, of a building because of its weight and/or soil shrinkage. Some settling is normal and expected; the amount may vary depending on construction and soil characteristics.Example: Normal settling may cause minor cracks to appear in the walls of a house, especially for new houses. A soil type that expands or contracts with changes in moisture will exacerbate the situation.

 
Britannica Concise Encyclopedia: settling

In building construction, the gradual subsiding of a structure as the soil beneath its foundation consolidates under loading. This may continue for several years after the structure's completion. Primary consolidation occurs as water is squeezed out from the voids within the soil mass. Secondary consolidation results from adjustments in the internal structure of the soil mass under a sustained load. Whenever the possibility of settlement exists, care must be taken to choose a structural system and foundation capable of adapting. Fixed-end beams present a problem as they are incapable of rotating under uneven settlement loads and bend in response to the stress; simply supported beams, the ends of which act as hinges, will rotate slightly and remain straight. Special columns with jacking devices may then be used to level the beams. Floating foundations and piles are often used to overcome the problems of building on yielding soils. See also soil mechanics.

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Architecture: settling

The sinking of pigments or other solid matter in paint with a consequent accumulation on the bottom of the can.

 
Wikipedia: settling

Settling is the process by which particulates settle to the bottom of a liquid and form a sediment.

Settling velocity or fall velocity or terminal velocity (ws) of a (sediment) particle is the rate at which the sediment settles in still fluid. It is diagnostic of grain size, but is also sensitive to the shape (roundness and sphericity) and density of the grains as well as to the viscosity and density of the fluid. It integrates all of these into a key transport parameter.

For dilute suspensions, Stokes' Law predicts the settling velocity of small spheres in fluid, either air or water. Stokes' Law finds many applications in the natural sciences, and is given by:

w=\frac{2(\rho_p-\rho_f)gr^2}{9\mu}

where w is the settling velocity, ρ is density (the subscripts p and f indicate particle and fluid respectively), g is the acceleration due to gravity, r is the radius of the particle and μ is the dynamic viscosity of the fluid.

Stokes' law applies when the Reynolds number is less than 0.1.

Settleable solids are the particulates that settle out of a still fluid. Settleable solids can be quantified for a suspension using an Imhoff tank or cone.

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Real Estate Dictionary. Dictionary of Real Estate Terms. Copyright © 2004 by Barron's Educational Series, Inc. All rights reserved.  Read more
Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more
Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Settling".  Read more

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