transportation engineering Flashcards

1
Q

Survey Instruments Used in Transportation Engineering

A

Total Stations
Auto Level/Dumpy Level
Theodolite
Global Positioning System (GPS)
Photogrammetry/Drone
Optical Square
Plumb Bob Laser
Laser Distance Meter (LDM)
Prismatic Compass
Prism
Leveling Staff
Prism Pole
Measuring Wheel
Tripod

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2
Q

an electronic/optical instrument used modern surveying and building construction that uses electronic transit theodolite in conjunction with electronic distance meter (EDM)

A

Total Stations

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3
Q

it is also integrated with microprocessor , electronic data collector, and storage system

A

Total Stations

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4
Q

used to measure sloping distance of object to the instrument , horizontal angles and vertical angles

A

Total Stations

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5
Q

enables for computation of data collected to further calculate the horizontal distance, coordinates a point and reduced level of point

A

Microprocessor unit

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6
Q

optical instrument to establish or verify points in the same horizontal plane

A

Auto Level/Dumpy Level

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7
Q

it is used in surveying and building with a vertical staff to measure height differences and to transfer, measure, and set heights

A

Auto Level/Dumpy Level

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8
Q

basic surveying instrument of unknown origin back to the 16th century english mathematician Leonard Digges

A

Theodolite

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9
Q

used to measure vertical and horizontal angles

A

Theodolite

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10
Q

space-based satellite navigation system the provides location and time information in all weather conditions, anywhere on or near the earth where there is an unobstructed line of sight to four or more GPS satellites

A

GPS

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11
Q

art and science of making accurate measurements by means of aerial photography

A

Photogrammetry/Drone

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12
Q

uses a pentaprism to reflect and retract a beam or sighting 90 degrees, it is used in pairs in surveying and in a singular block in metrology

A

Optical Square

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13
Q

type of laser level that projects a
small dot onto a surface. These dots are used for transferring points from
wall to wall or ceiling to floor. It’s a handy tool for making sure a wall is plumb
or even installing wall-to-wall.

A

Plumb Bob Laser/Dot-Plumb Laser

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14
Q

based on the
principle of reflection of a laser beam.

A

Laser measurement tools

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15
Q

this device
emits a pulse of laser in the direction of an object, for example a
wall. The time necessary for the laser beam to get to the object
and go back determines the measurement of the distance.

A

LDM

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16
Q

navigation and surveying instrument which is
extensively used to find out the bearing of the
traversing and included angles between them,
waypoints (an endpoint of the Closure) and
direction.

A

Prismatic Compass

17
Q

specially designed retro
reflector, specifically a corner reflector that is used to reflect the
Electronic Distance Measurement (EDM) beam from a total station.

A

Optical Survey Prisms

18
Q

reflects the EDM beam back to its source with both a
wide angle of incidence and with high precision

A

Survey prism

19
Q

graduated feet
and meter on aluminum rod, used with a levelling instrument to
determine the difference in height between points or heights of points
above a vertical datum. It cannot be used without a leveling
instrument.

A

Leveling Staff

20
Q

can be used to measure the elevation of a
specific ground point by using a sight level, which is important if you
want to get accurate results.

A

Prism Pole

21
Q

tool used to measure distances

A

Measuring Wheel

22
Q

have a counting mechanism that counts the number of rotations and uses the circumference of the wheel to calculate the distance covered

A

Measuring Wheel

23
Q

a portable three/legged frame or stand, used as a platform for supporting the weight and maintaining the stability of some other object

A

Tripod