What are the uses of ranging?
What are the uses of ranging?
The process of fixing or establishing intermediate points to facilitate measurement of the survey lines are called as Ranging. The intermediate points are located by means of ranging rodes, offset rods and ranging poles.
How are ranging rods used in surveying?
Assistants hold a running pole at P vertically at a safe distance, usually at arm’s length. It should be held gently by thumb and front finger. Now surveyor guides the partner to move the ranging pole to the right or left sides. Until the three bars come precisely in a similar straight line.
What is the difference between ranging pole and ranging rod?
Range poles are survey instruments that are used for spotting and marking the position of survey stations. They can also be used to range straight lines. If a range rod is longer than 12 feet, it’s called a ranging pole.
What is the use of ranging pole in agriculture?
I (Ranging pole) – Used for marking stations; – For making straight lines.
What is a level rod?
: a graduated rod used in measuring the vertical distance between a point on the ground and the line of sight of a surveyor’s level.
How do you use ranging rods?
The correct way to hold a ranging pole is to keep it loosely between thumb and index finger, about 10 cm above the soil (see Fig. 10). When the observer indicates that the ranging pole is in the right position, the assistant loosens the pole.
What does Ranging Pole mean in geography?
1. ranging pole – surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors.
How is ranging done?
Ranging is done by eye-judgement. Ranging rods are erected vertically beyond each end of survey line. The surveyor stands 2m beyond the ranging rod while the assistant folds the ranging rod vertically in the intermediate stations. The ranging rod is held roughly in line by the thumb and fore-finger.
What is the difference between ranging and chaining?
Ranging: The process of locating intermediate points on a straight line between two end points in a straight line. (ii). Chaining: The process of measuring the distance with a chain or tape.
Why do surveyors use tenths?
The reason for the tenths of a foot is for measuring out and squaring up strings used to mark the foundations and footings for buildings. You can calculate the diagonal for checking squareness and read it out directly on the tape measure.
How does a leveling rod work?
A leveling rod is a surveying tool used to take elevation measurements for the purpose of profiling a section of terrain. The surveyor can take the leveling rod out at the site, assemble it, and lock the components in place to make sure they will not slide while taking measurements.
What is a ranging rod used for?
A ranging rod is a surveying instrument used for marking the position of stations and for sightings of those stations as well as for ranging straight lines. Initially these were made of light, thin and straight bamboo or of well seasoned wood such as teak, pine or deodar.
What is a range rod in surveying?
Ranging rod. A ranging rod (or range rod) is a surveying instrument used for marking the position of stations, and for sightings of those stations, as well as for ranging straight lines.
What is the curvature of the tube of a ranging rod?
The tube has an upward curvature which makes the bubble remain in center unless the surface is inclined. A ranging rod is an instrument extensively used for marking the position of different surveying stations/pegs and for taking sights of those stations. It is also used for ranging for straight lines.
What is the standard size of a range rod?
Ranging rod. The rods are usually 3 cm in diameter and 2 m or 3 m long, painted alternatively either red and white or black and white in lengths of 20 cm (i.e. one link length of metric chain). These colours are used so that the rod can be properly sighted in case of long distance or bad weather.
