Control Survey Intro

Land Survey is ...

• The science of determining the relative position on horizontal plane.

• The science of determining the relative position on a sphere.

• The science of determining the relative position on the Earth’s surface.

• The science of determining the distances on the Earth’s surface.

What's the different between Geodetic and Plane Survey?

• Geodetic Survey doesn't take into account the true size, shape just the gravity fields of the Earth. Plane Survey assumes the Earth’s surface to be a plane.

• Geodetic Survey takes into account the true size, shape and gravity fields of the Earth. Plane Survey assumes the Earth’s surface to be a plane.

• Plane Survey assumes the Earth’s surface to be part of a sphere. Geodetic Survey takes into account the true size, shape and gravity fields of the Earth considering it flat.

• Plane Survey assumes the Earth’s surface sometimes is flat. Geodetic Survey takes into account the size and shape of the Earth.

All measurements taken for

engineering (1) ................. are based on a (2) ................... of horizontal and vertical (3) ........................ points

called (4) ...................... points.

• (1) Surveys, (2) reference, (3) control, (4) network

• (1) Surveys, (2) network, (3) reference, (4) control

• (1) Network, (2) Surveys, (3) control, (4) reference

Types of Control Surveys ...

• Traversing, Triangulateration

• Trilateration, Triangulation, Setting Out

• Resection, Intersection

• A combination of them

Choose the right definition of "Link Traverse" ...

• Starting and finishing on known coordinated points

• Just starting on known coordinated points and azimuth.

• Starting and finishing on known coordinated points and azimuth.

• Starting on unknown coordinated points and finishing on known coordinates points

Standard mode. Angular and linear accuracy of this instrument (TPS1205) ...

• Linear 5" ppm , angular 2 mm ± 3

• Linear 10", angular 2 ppm ± 2 mm

• Linear 2 mmm ± 2 ppm, angular 5"

• Angular 15", Linear 3 ± 3 mm

If the precision of a distance D= 100 m is “σ = 0.020 m” , the relative precision is expressed as 1 in D/σ which is ...

• 1 in 10000, 1 mm in 10 m

• 1 in 500, 1 mm in 0.5 m

• 1 in 5000, 1 mm in 5 m

• 1 in 1000, 1 mm in 1 m

Which "Station Marking" would be the best for a Traverse Control Point on street ...

• A

• B, C and D

• A and C

• C

Traversing.

Which answer is the right field procedure?

• Set up at A, back sight D, fore sight B. Next set up clockwise at B

• Set up at A, back sight B, fore sight D. Next set up clockwise at B

• Set up at A, back sight D, fore sight B. Next set up anticlockwise at B

• Set up at D, back sight A, fore sight B. Next set up anticlockwise at B

Parallax. Choose the right image

• A

• B