Surveyor of the week competition

What is the horizontal control ?

• To establish levels

• To locate positions

• To check compaction of soil

• To find the elevation of benchmarks

A benchmark is used to transfer levels from one point to another.

• True

• False

Which instrument is mainly used for vertical control?

• Total Station

• Auto Level

• Measuring Tape

• Theodolite

When setting out a right angle by the 3-4-5 method, the diagonal should be:

• 6.5 m

• 7 m

• 5 m

• 10 m

The following is an example of horizontal control

• Using theodolite for measuring angles

• Using auto level for TBM

• Using total station for measuring angles

• Performing a right angle

What does back sight mean ?

• A measurement taken to a point of known elevation

• A measurement taken to a point of elevation that we do not know

• Angle measured from the instrument to the target

• A type of surveying instrument.

In horizontal control, a small measurement error will not change the place of the building

• True

• False

Horizontal control fixes ________, while vertical control fixes ________.

• Height / Length

• Area / Volume

• Position / Height

• Grid / Line

Which of the following is NOT part of vertical control procedure?

• Using backsight and foresight

• Calculating reduced levels

• Check of diagonals

• Using a staff

The 3-4-5 method can be used to check both horizontal and vertical alignment.

• True

• False