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In the context of Civil Engineering, especially land surveying, Reduced Level "RL" refers to reducing (or equating) levels (elevations) to a common datum, which is either a real or imaginary location with a nominated elevation of zero.
The most common convenient datum was mean sea level.
On small surveys that require the collection of elevation data the datum can be assumed and for practical purposes it simply needs to be far enough below the survey area to avoid negative numbers, thus the starting point of a survey might be nominated to be RL 100.00
Wiki User
∙ 7y ago
Wiki User
∙ 11y agobecause it is not the actual level of any point rather it is given with reference to some datum. e.g. R. L = 550 m above mean sea level etc.
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What is the unit of reduced level?
metres above the mean sea level
What is the difference between invert level and reduced level in a drainage system?
Invert Level is the bottom of the pipe, reduced level is the middle of the pipe.
What would be the effect of a concrete beam if the cover provided becomes more than specified?
strength will be reduced
What s invert level?
In civil engineering, the invert level is the base inside level of a pipe, trench or tunnel the carries liquid, considered the "floor" level. It is used to determine the hydraulic gradient.
What is the difference between invert level and invert elevation?
Invert Level and Invert Elevation are one in the same. Invert Level = Invert Elevation (IE).
What is the unit of reduced level?
metres above the mean sea level
What is the difference between invert level and reduced level in a drainage system?
Invert Level is the bottom of the pipe, reduced level is the middle of the pipe.
What is reduced leveling?
A reduced level is the vertical distance between a survey point and the adopted level datum
How do you used a reduced level?
detail about reduecd level?
How do you calculate reduce level in surveying?
You first have to have a reference point, beacon or bench mark - this has a known elelvation, or reduced level in metres above mean sea level (AMSL). (Where MSL = 0). When your helper places the staff (graduated measuring staff like a big ruler) on the reference point, read off the value as observed by you, through the machine you are using (level, theodolite, other electronic instruments) and add this to the level of the reference point. This is called the Collimation height and is basically, the height of your instrument, above the reference point (and in turn, above mean sea level). If you helper then holds the staff on another point of unknown reduced level, you takes the reading of the staff through your instrument, and subtract that from your Collimation height. This will then give you the REDUCED LEVEL of the point. Thus, the REDUCED LEVEL IS A LEVEL, ABOVE MEAN SEA LEVEL, OF A POINT AS COMPARED AGAINST A REFERENCE POINT OF KNOWN REDUCED LEVEL. Different places will derive their own AMSL system based upon, obviously, their own local, average sea level.
Indifference and a reduced level of activity?
apathy
What is meaning of reduced level in land surveying?
height of reference point to determine level
Can 814 be reduced?
If you mean 8/14 then it is 4/7 reduced
Can 672 be reduced?
If you mean 6/72 then it is 1/12 reduced
What is 36100 reduced?
If you mean 36/100 then it is 9/25 reduced
What does it mean when it says reduced engine power?
That means the engine is running HOT for some reason. Check the thermostat, Radiator and coolant level. Repair as needed.
What does reduced engine power mean in a 2003 Chevy Tahoe?
That means the engine is running HOT. Need to check the coolant level and check for coolant leaks.
