What is gts benchmark

All these benchmarks are quite useful in small projects. A benchmark is a point of reference by which something can be measured. The total context against which all products are measured and compared is referred to as the benchmark.

Like this post? Share it with your friends! Hey, I am Krunal Rajput. The Man Behind CivilJungle. I started this site to spread knowledge about Civil Engineering. I am a Degree Holder in Civil Engineering. Your email address will not be published. With reference to this temporary benchmark, the work is carried forward on the next day and so on. Now study on-the-go.

Find useful content for your engineering study here. Questions, answers, tags - All in one app! Ask Question. Suppose A and b are two such point and level is set up at 0, approximately mid way between. Booking is the same as the rise and fall method for back-, intermediate- and foresights. There are no rise or fall columns, but instead a height of collimation column. The first backsight reading staff on datum, benchmark or RL is added to the first RL giving the height of collimation. Height of Collimation is the height of the horizontal plane through the telescope.

In order to see the staff on the BM the instrument must be higher. The process by which a beam of radiant electromagnetic energy is lined up to minimize divergence or convergence. Ideally, a collimated beam is a bundle of parallel rays perfectly lined up along an optical line-of-sight LOS between a transmitter and receiver, perhaps through, and in perfect parallel with, a waveguide.

A collimator is a device that narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction i. Line of collimation : Line joining the intersection of the cross-hairs to the optical center of the objective and its continuation.

It is also know as Line of sight. Line of sight : is defined as the intersection of the cross hairs and the optical centre of the objective lens. These are established all over India by Survey of India department with greater precision.

A benchmark value is quite essential at any survey area, especially for reduction of observed sea level with respect to mean sea level or chart datum CD.

While carrying out bathymetric survey of a survey area, the datum referenced values thus obtained are used to compute the final depth contours of the survey area with respect to CD. So, a benchmark, having known elevation is quite essential at the survey area, without which, preparation of a bathymetric chart is impossible.