Question

Define R.F In Engineering Drawing​

Answer 1

Answer:

Representative fraction   is the full form

explanation:

A representative fraction is the ratio of the length of the object represented on drawing to the actual length of the object represented. 2. The scale of a drawing is given as 1:20. ... So the representative factor is that dimension in drawing to actual dimension. R.F.

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Answer 2

A representative fraction (RF) indicates ratio between the number of units on the map to the number of units on the ground.

Representative fractions are a unit-less relation between one “unit” on the map and how ever many “units” of the same type on the ground. An RF of 1:24,000 means one inch on the map equals 24,000 inches on the ground and one centimeter on the map equals 24,000 centimeters on the ground.

Representative fractions allow the amount of reduction to be easily understood, but it is harder for most people to determine specific distances on the map because distances must either be multiplied or divided by the RF. Representative fractions are invalid if the map is reduced or enlarged. An advantage of adding RFs to your map is that they are extremely easy to determine in ArcMap – simply look at the Map Scale text on the to bar menu of the ArcMap interface. If you do plan to use an RF and the current scale of your map is a number that is not either standard or rounded off, you should change your map scale before creating the final version of your map so that the RF is an easier number for your map readers to understand. Sometimes it is helpful to provide a scale bar along with the RF to give your map readers the advantages of using both.

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