Reduced Level given Height of Instrument Calculator

✖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.ⓘ Height of Instrument [HI]			+10% -10%
✖Back Sight is the sight or reading taken towards the back or towards a known elevation.ⓘ Back Sight [BS]			+10% -10%

✖Reduced level is the vertical distance between a survey point and the adopted level datum.ⓘ Reduced Level given Height of Instrument [RL]

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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)

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Created by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has created this Calculator and 500+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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< Levelling Calculators

Distance between Two points under Curvature and Refraction

LaTeX Go Distance between Two Points = (2*Earth Radius in km*Error due to Curvature+(Error due to Curvature^2))^(1/2)

Distance for small errors under Curvature and Refraction

LaTeX Go Distance between Two Points = sqrt(2*Earth Radius in km*Error due to Curvature)

Error Due to Curvature Effect

LaTeX Go Error due to Curvature = Distance between Two Points^2/(2*Earth Radius in km)

Combined Error Due to Curvature and Refraction

LaTeX Go Combined Error = 0.0673*Distance between Two Points^2

Reduced Level given Height of Instrument Formula

LaTeX Go

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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