question: Why is everything involved in the transportation, usage, and storage of water or any other fluid, round?
comment: Round things distribute pressure better. Hard edges create focal point for pressure to operate on, and ate the weakest point of any container when pressure is involved.
passages: BULLET::::- Asymmetrical balance produces an informal balance that is attention attracting and dynamic.
  
  BULLET::::- Radial balance is arranged around a central element. The elements placed in a radial balance seem to 'radiate' out from a central point in a circular fashion.
  
  BULLET::::- Overall is a mosaic form of balance which normally arises from too many elements being put on a page. Due to the lack of hierarchy and contrast, this form of balance can look noisy but sometimes quiet.
  
  Section::::Principles of design.:Hierarchy.
   BULLET::::- A round manhole cover cannot fall through its circular opening, whereas a square manhole cover might fall in if it were inserted diagonally in the hole. The existence of a "lip" holding up the lid means that the underlying hole is smaller than the cover, so that other shapes might suffice. (A Reuleaux triangle or other curve of constant width would also serve this purpose, but round covers are much easier to manufacture.)
  
  BULLET::::- Round tubes are the strongest and most material-efficient shape against the compression of the earth around them.
   Section::::Technology.:Tube settlers.
  
  Tube settlers are commonly used in rectangular clarifiers to increase the settling capacity by reducing the vertical distance a suspended particle must travel. High efficiency tube settlers use a stack of parallel tubes, rectangles or flat pieces separated by a few inches (several centimeters) and sloping upwards in the direction of flow. This structure creates a large number of narrow parallel flow pathways encouraging uniform laminar flow as modeled by Stokes' law. These structures work in two ways:
  
  BULLET::::1. They provide a very large surface area onto which particles may fall and become stabilized.
   BULLET::::- Psychological Inertia can also result from the interpretation of words and their assumed meaning. "How is a pipe able to fit through a square hole if the square hole had slightly less cross-sectional area? The answer, pipes by design do not necessarily have to be round. They can be square."
  
  Section::::Applied Assumptions of Psychological Inertia.
  
  BULLET::::- Prisoner classification during incarceration
   BULLET::::14. These circles follow one another in a continuous series and are all parallel among themselves; they do not overlap or enclose one another; the apparent motion forms a solid surface containing larger and smaller circles.
  
  Section::::Principal works.:Bullialdus' hypothesis, not for economists.
   Abrasion occurs in natural environments such as beaches, sand dunes, river or stream beds by the action of current flow, wave impact, glacial action, wind, gravitational creep and other erosive agents.
  
  Section::::Paleogeographic value of determining the degree of roundness of clastic material.
  
  Roundness is an important indicator of the genetic affiliation of a clastic rock. The degree of roundness points to the range and mode of transport of clastic material, and can also serve as a search criterion in mineral exploration, especially for placer deposits.
   Section::::Roundness error definitions.
  
  BULLET::::- Least square circle (LSC): It is a circle which separates the roundness profile of an object by separating the sum of total areas of the inside and outside it in equal amounts. The roundness error then can be estimated as the difference between the maximum and minimum distance from this reference circle
   BULLET::::- Tile regularity and shape: there are regular, semi-regular or irregular grid. As in generic tilings by regular polygons, is possible to tiling with regular face (like wall tiles can be rectangular, triangular, hexagonal, etc.), or with same face type but changing its size or angles, resulting in semi-regular shapes. Uniformity of shape and regularity of metrics provide better grid-indexing algorithms. Although it has less practical use, totally irregular grids are possible, such in a Voronoi coverage.
   BULLET::::- Gas volumetric flow rate – Baghouses are created to accommodate a range of gas flows. An increase in gas flow rates causes an increase in operating pressure drop and air-to-cloth ratio. These increases put more mechanical strain on the baghouses, resulting in more frequent cleanings and high particle velocity, two factors that shorten bag life.
  
  Section::::Design variables.
  
  Pressure drop, filter drag, air-to-cloth ratio, and collection efficiency are essential factors in the design of a baghouse.
   Rounding, roundness or angularity are terms used to describe the shape of the corners on a particle (or clast) of sediment. Such a particle may be a grain of sand, a pebble, cobble or boulder. Although roundness can be numerically quantified, for practical reasons geologists typically use a simple visual chart with up to six categories of roundness:
  
  BULLET::::- Very angular: corners sharp and jagged
  
  BULLET::::- Angular
  
  BULLET::::- Sub-angular
  
  BULLET::::- Sub-rounded
  
  BULLET::::- Rounded
  
  BULLET::::- Well-rounded: corners completely rounded
   General models, installed with wooden frames indicating lesser reinforcements, are used for applications involving materials with distinct difference in sizes. An example for this is the removal of impurities from wood chips for biomass fuel production. In this case, the desired product will be discharged at the coarsest screen, leaving smaller impurities to sink to the bottom frames. These models are selected for more economical purposes and are less common.
  
  Section::::Comparison to other methods.
  
  Section::::Comparison to other methods.:Advantages.
  
  BULLET::::- Low running cost
   BULLET::::- Round tubes are the strongest and most material-efficient shape against the compression of the earth around them, and so it is natural that the cover of a round tube assume a circular shape.
  
  BULLET::::- A round manhole cover has a smaller surface than a square one, thus less material is needed to cast the manhole cover, meaning lower cost.
  
  BULLET::::- The bearing surfaces of manhole frames and covers are machined to assure flatness and prevent them from becoming dislodged by traffic. Round castings are much easier to machine using a lathe.
   BULLET::::- The ultraclean vacuum of space allows the creation of very pure materials and objects. The use of vapor deposition can be used to build up materials layer by layer, free from defects.
  
  BULLET::::- Surface tension causes liquids in microgravity to form perfectly round spheres. This can cause problems when trying to pump liquids through a conduit, but it is very useful when perfect spheres of consistent size are needed for an application.
   BULLET::::- the roundels set into the wall, intended to pulsate when the ship was in motion. (This and other initial concepts were never realised due to budgetary restraints.) Hussein later noted that the roundel pattern arose simply from the fact that the plastic with which Brachacki had made his initial concept model featured round patterning.
   BULLET::::- Fish bladder or Lens shape (the latter taking its name from the shape of the lentil seed)
  
  BULLET::::- Geoid (From Greek Ge (γη) for "Earth"), the term specifically introduced to denote the approximation of the shape of the Earth, which is approximately spherical, but not exactly so
  
  BULLET::::- Heart shape, long been used for its varied symbolism
  
  BULLET::::- Hourglass shape or hourglass figure, the one that resembles an hourglass; nearly symmetric shape wide at its ends and narrow in the middle; some flat shapes may be alternatively compared to the figure eight or hourglass
   BULLET::::- "The Grid" ("The Outer Limits"), an episode of the science fiction series, 2000
  
  BULLET::::- "The Grid" (US TV series), an American TV series, on IFC
  
  BULLET::::- "Mobil 1 The Grid", a motorsport magazine TV show, on Channel 4
  
  Section::::Design and planning.
  
  BULLET::::- Grid (graphic design) or "typographic grid", organized lines for guiding graphic design
  
  BULLET::::- Grid paper, or graph paper, the writing paper that is printed with fine lines making up a regular grid
  
  BULLET::::- Grid plan, a method of city and regional planning in which streets and administrative units are arranged at right angles
   Section::::Wet agglomeration methods.:Mechanical mixing.
  
  BULLET::::1. Pan or disk agglomerators (rarely used for food powders): Pan or disk agglomerators use the rotation of a disk or bowl to agitate the powder as it is sprayed with water. This type of agglomeration creates agglomerates with higher density than agglomerates produced in fluidized beds.
   Section::::History.:Grid use in web design.
  
  While grid systems have seen significant use in print media, interest from web developers has only recently seen a resurgence. Website design frameworks producing HTML and CSS had existed for a while before newer frameworks popularised the use of grid-based layouts. Some grid systems specify fixed-width elements with pixels, and some are 'fluid', meaning that they call for page element sizing to be in relative units like percentages, rather than absolute units like pixels or points.
  
  The W3C published the CSS Grid Layout Module Level 1 to define a two-dimensional grid-based layout system.
   BULLET::::- Sorae-gi (): Depending on the area also called sorae-gi, which has versatile uses, such as when a large amount of vegetables were washed or knocked down as cooking utensils during housework or as a lid of bath tubs or large jars. The diameter is much larger than the bottom diameter.
  
  BULLET::::- Nulbakji (): It is widely used to wash vegetables or to wash clothes with a container spreading sideways at low height.
   The ISO definition of roundness is based on the ratio between the inscribed and the circumscribed circles, i.e. the maximum and minimum sizes for circles that are just sufficient to fit inside and to enclose the shape. 
  
  Section::::Simple definitions.:Diameter.
  
  Having a constant diameter, measured at varying angles around the shape, is often considered to be a simple measurement of roundness. This is misleading.
   Shape will contribute to the speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment.
  
  Section::::Catchment factors.:Size.
  
  Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin.
  
  Section::::Catchment factors.:Soil type.
   The shape of the elements is of great importance in solving the CFD problems. They are typically based on aspect ratio i.e. the aspect ratio of element decide whether a particular element would be good to use or we should go for another element with different aspect ratio. For example, if the aspect ratio is large the speed of solver reduces while if this ratio is small the solver speed increases. Large aspect ratio has another limitation of leading to interpolation errors. But if the results vary with direction then we use large aspect ratio.
   It refers to the tendency of liquids — and of unbound aggregates of small solid objects, like seeds, gravel, or crushed ore, whose behavior approximates that of liquids — to move in response to changes in the attitude of a craft's cargo holds, decks, or liquid tanks in reaction to operator-induced motions (or sea states caused by waves and wind acting upon the craft). When referring to the free surface effect, the condition of a tank that is not full is described as a "slack tank", while a full tank is "pressed up".
  
  Section::::Stability and equilibrium.
   BULLET::::- In botanical leaf taxology, the word "decussate" describes an opposite pattern of leaves which has successive pairs at right angles to each other (i.e. rotated 90 degrees along the stem when viewed from above). In effect, successive pairs of leaves cross each other. Basil is a classic example of a decussate leaf pattern.
  
  BULLET::::- In tooth enamel, where bundles of rods cross each other as they travel from the enamel-dentine junction to the outer enamel surface, or near to it.
   BULLET::::- Triple layer grid: Elements are placed in three parallel layers, linked by the diagonals. They are almost always flat.
  
  Other examples classifiable as space frames are these:
  
  BULLET::::- Pleated metallic structures: Emerged to try to solve the problems that formwork and pouring concrete had their counterparts. Typically run with welded joint, but may raise prefabricated joints, a fact which makes them space meshes.
  