Question: What Is The Difference Between Contour Interval And Horizontal Equivalent?

What is a contour interval and on what factors does it depend?

Answer.

Answer: The contour interval depends upon the general topography of the terrain.

In flat ground, contours at small intervals are surveyed to depict the general slope of the ground whereas high hills can only be depicted with contours at larger contour interval..

How do you find horizontal equivalent?

Horizontal Equivalent is the actual distance between two points on two contour lines. Slope of the land is known as the gradient. It can be expressed as. Gradient = Vertical Interval/Horizontal Equivalent.

What is the contour interval?

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.

What is meant by a contour line?

Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level.

What are the factors on which contour lines are based?

FACTORS FOR DECIDING CONTOUR INTERVAL The contour interval is kept inversely proportional to the scale of the map. Purpose of the map. The contour interval on a map also depends upon the purpose for which the map is to be utilized. Nature of the ground.

What are musical intervals?

In music theory, an interval is the difference in pitch between two sounds. An interval may be described as horizontal, linear, or melodic if it refers to successively sounding tones, such as two adjacent pitches in a melody, and vertical or harmonic if it pertains to simultaneously sounding tones, such as in a chord.

What is the difference between contour interval and vertical interval?

Answer. A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.

What is the ratio between vertical interval and horizontal equivalent?

Gradient = Vertical Interval/Horizontal Equivalent.

How do you find a contour interval?

Divide the difference in elevation between the index lines by the number of contour lines from one index line to the next. In the example above, the distance 200 is divided by the number of lines, 5. The contour interval is equal to 200 / 5 = 40, or 40-unit contour intervals.

Why do contour lines never cross?

Contour lines can never cross one another. Each line represents a separate elevation, and you can’t have two different elevations at the same point.

How do you find slope from horizontal distance?

CALCULATING HORIZONTAL DISTANCE The slope percent equation can be rearranged to provide the equation for the horizontal distance. Rearrange the terms of equation: multiply both sides by run. Divide both sides by slope percent. run = (rise × 100 ) / slope % is a measure of horizontal distance.

What is a contour index?

A contour line shown on a map in a distinctive manner for ease of identification, being printed more heavily than other contour lines and generally labeled with a value (such as figure of elevation) along its course.

What is horizontal equivalent in contouring?

The horizontal distance on the earth’s surface between successive contours. The height interval between the successive contours is known as a vertical interval. For a given vertical interval, the smaller the horizontal equivalent, the steeper is the average slope.

What is a horizontal interval?

Horizontal blanking interval refers to a part of the process of displaying images on a computer monitor or television screen via raster scanning. CRT screens display images by moving beams of electrons very quickly across the screen. … This part of the line display process is the Horizontal Blank.

What is the factors affecting contour interval?

FACTORS FOR DECIDING CONTOUR INTERVAL1) Scale of the map. The contour interval is kept inversely proportional to the scale of the map. … 2) Purpose of the map. The contour interval on a map also depends upon the purpose for which the map is to be utilized. … 3) Nature of the ground. … 4) Availability of time and funds.