Reduced Level given Height of Instrument Solution

STEP 0: Pre-Calculation Summary
Formula Used
Reduced Level = Height of Instrument-Back Sight
RL = HI-BS
This formula uses 3 Variables
Variables Used
Reduced Level - (Measured in Meter) - Reduced level is the vertical distance between a survey point and the adopted level datum.
Height of Instrument - (Measured in Meter) - Height of instrument is the vertical distance from the surface of earth to the collimation plane. It is also called as height of plane of collimation.
Back Sight - (Measured in Meter) - Back Sight is the sight or reading taken towards the back or towards a known elevation.
STEP 1: Convert Input(s) to Base Unit
Height of Instrument: 65 Meter --> 65 Meter No Conversion Required
Back Sight: 20 Meter --> 20 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
RL = HI-BS --> 65-20
Evaluating ... ...
RL = 45
STEP 3: Convert Result to Output's Unit
45 Meter --> No Conversion Required
FINAL ANSWER
45 Meter <-- Reduced Level
(Calculation completed in 00.020 seconds)

Credits

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NSS College of Engineering (NSSCE), Palakkad
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Reduced Level given Height of Instrument
Go Reduced Level = Height of Instrument-Back Sight
Back Sight given Height of Instrument
Go Back Sight = Height of Instrument-Reduced Level
Height of Instrument
Go Height of Instrument = Reduced Level+Back Sight
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Go Refraction Correction = 0.0112*Distance between Two Points^2
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Go Height of Observer = 0.0673*Distance between Two Points^2
Combined Error Due to Curvature and Refraction
Go Combined Error = 0.0673*Distance between Two Points^2

Reduced Level given Height of Instrument Formula

Reduced Level = Height of Instrument-Back Sight
RL = HI-BS

What is the meaning of the term Reduced Level?

It is a vertical distance between survey point and adopted datum plane. Thus it is considered as the base elevation which is used as reference to reckon heights or depths of other important places. Reduced here means equating and Level means Elevations.

How to Calculate Reduced Level given Height of Instrument?

Reduced Level given Height of Instrument calculator uses Reduced Level = Height of Instrument-Back Sight to calculate the Reduced Level, The Reduced Level given Height of Instrument is defined as the vertical distance between a survey point and the adopted level datum. A bench mark (BM) is the term given to a definite, permanent accessible point of known height above a datum to which the height of other points can be referred. Reduced Level is denoted by RL symbol.

How to calculate Reduced Level given Height of Instrument using this online calculator? To use this online calculator for Reduced Level given Height of Instrument, enter Height of Instrument (HI) & Back Sight (BS) and hit the calculate button. Here is how the Reduced Level given Height of Instrument calculation can be explained with given input values -> 45 = 65-20.

FAQ

What is Reduced Level given Height of Instrument?
The Reduced Level given Height of Instrument is defined as the vertical distance between a survey point and the adopted level datum. A bench mark (BM) is the term given to a definite, permanent accessible point of known height above a datum to which the height of other points can be referred and is represented as RL = HI-BS or Reduced Level = Height of Instrument-Back Sight. Height of instrument is the vertical distance from the surface of earth to the collimation plane. It is also called as height of plane of collimation & Back Sight is the sight or reading taken towards the back or towards a known elevation.
How to calculate Reduced Level given Height of Instrument?
The Reduced Level given Height of Instrument is defined as the vertical distance between a survey point and the adopted level datum. A bench mark (BM) is the term given to a definite, permanent accessible point of known height above a datum to which the height of other points can be referred is calculated using Reduced Level = Height of Instrument-Back Sight. To calculate Reduced Level given Height of Instrument, you need Height of Instrument (HI) & Back Sight (BS). With our tool, you need to enter the respective value for Height of Instrument & Back Sight and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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