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K-factor (Elo rating system), a constant used in Elo rating system; K-factor (marketing), the growth rate of websites, apps, or a customer base; K-factor (sheet metal), the ratio of location of the neutral line to the material thickness; The K Factor, a fictional TV show within Harry Hill's TV Burp; Bondi k-factor, the "k" in Bondi k-calculus
In viral marketing, the K-factor can be used to describe the growth rate of websites, apps, or a customer base. The formula is roughly as follows: [ 1 ] i = number of invites sent by each customer {\displaystyle i={\text{number of invites sent by each customer }}} (e.g. if each new customer invites five friends, i = 5)
In fire protection engineering, the K-factor formula is used to calculate the volumetric flow rate from a nozzle. Spray nozzles can for example be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.
In transportation engineering, the K factor is defined as the proportion of annual average daily traffic occurring in an hour. [1] This factor is used for designing and analyzing the flow of traffic on highways. K factors must be calculated at a continuous count station, usually an "automatic traffic recorder", for a year before being determined.
The K-factor is the bending capacity of sheet metal, and by extension the forumulae used to calculate this. [ 1 ] [ 2 ] [ 3 ] Mathematically it is an engineering aspect of geometry . [ 4 ] Such is its intricacy in precision sheet metal bending [ 5 ] (with press brakes in particular) that its proper application in engineering has been termed an art.
The relationships are based on levels of risk considered acceptable for specific exposures but they do not provide absolute safety or protection. Exposures are expressed by a “K-factor” (K6, K18, etc.) which represents the degree of protection provided; higher is better.
The K-factor depends on many variables including the material, the type of bending operation (coining, bottoming, air-bending, etc.) the tools, etc. and is typically between 0.3 and 0.5. The following equation relates the K-factor to the bend allowance: [12] = + /.
The K factor or characterization factor is defined from Rankine boiling temperature °R=1.8Tb[k] and relative to water density ρ at 60°F: . K(UOP) = / The K factor is a systematic way of classifying a crude oil according to its paraffinic, naphthenic, intermediate or aromatic nature. 12.5 or higher indicate a crude oil of predominantly paraffinic constituents, while 10 or lower indicate a ...