Boundary line
GTS benchmark is called Great trigometical survey benchmark. its position is decided by survey of India department. it RL is decided with reference to MEAN SEA LEVEL. no of benchmark, position and location is given in catalogue of survey of India department.
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
Green concrete could mean two different things. It could mean that the concrete isn't cured yet, or it could mean that it is supposed to be environmentally friendly.
RCC
Down
Survey spikes with orange ribbons typically indicate property boundaries or survey markers. These markers are often placed by surveyors to demarcate the limits of a parcel of land. It's important to respect these markers as they represent legal boundaries and should not be disturbed or removed without permission.
Colored survey markers typically indicate different types of information such as property boundaries, utility lines, or specific survey points. Each color may represent a different type of information or a particular surveying agency's standard. It is important to consult the appropriate survey plans or authorities to understand the meaning of the specific colors used in survey markers.
Fire hydrant nearby.
it's a place for helicopters to land.
markers
markers
An ILA land survey, also known as an Improvement Location Certificate, is a type of survey that shows where improvements like buildings, fences, and driveways are located on a property. It typically does not show boundary lines or property corners. It is often used for real estate transactions to verify the location of improvements in relation to property boundaries.
PLS can stand for a variety of things depending on the context. It can mean "Please," "Partial Least Squares" in statistics, or "Public Land Survey."
markers
It means "The markers."
I wonder, which map the question originator is looking at? On Ordnance Survey maps symbol guides, there is no RED STAR. There is however a blue star meaning: Other Tourist Feature.
slip markers simply means moving your marker from one needle to the another one.