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Surveying (Lec) > Surveying Terms Reviewer (Lecture 6—9) > Flashcards

Surveying Terms Reviewer (Lecture 6—9) Flashcards

1
Q

the direction of a line is described by the horizontal angle that it makes with the reference line or direction.

A

Meridian

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2
Q

fixed line of reference is called?

A

Meridian

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3
Q

what type of meridian is also known as the astronomic meridian or geographic meridian?

A

True Meridian

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4
Q

what type of meridian has the direction of a line passing through the astronomic north and south poles and the observer’s position?

A

True Meridian

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5
Q

what type of meridian has a direction taken by the magnetized needle of a compass at the observer’s position?

A

Magnetic Meridian

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6
Q

what type of meridian has a fixed line of reference parallel to the central meridian of a system of plane rectangular coordinates?

A

Grid Meridian

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7
Q

what type of meridian has an arbitrary chosen fixed line of reference which is taken for convenience?

A

Assumed Meridian

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8
Q

What type of meridian has a direction from a survey station to an adjoining stations or some well defined and permanent point?

A

Assumed Meridian

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9
Q

What type of meridian has a direction from a survey station to an adjoining stations or some well defined and permanent point?

A

Assumed Meridian

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10
Q

is defined as the horizontal angle the line makes with an established line of reference.

A

Direction of Lines

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11
Q

What are the 5 kinds of angles used in Surveying?

A
  1. Interior Angles
  2. Deflections Angles
  3. Angles to the right
  4. Bearings
  5. Azimuths
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12
Q

measured to the right clockwise from the preceding line.

A

Angle

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13
Q

either from north or south either clockwise or anticlockwise as per convenience.

A

Bearing

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14
Q

The system of measuring this bearing is known as Whole Circle Bearing System (WCB System)

A

Azimuth

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15
Q

A hand-held instrument for determining the horizontal direction of a line with reference to magnetic meridian.

A

Compass

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16
Q

the ___ of the instrument has a horizontal circle which is graduated from 0-90° in each quadrant. (5-10 minutes reading)

A

Compass Box

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17
Q

usually is fixed along the index mark on the north graduation of the circle.

A

Line of Sight

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18
Q

the compass needle is of magnetized tampered steel balanced at its center on a jeweled pivot so that it swings freely in the horizontal position.

A

Magnetic Needle

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19
Q

is a specialized instrument used widely by those meeting to make accurate deeper & angle measurements in the field (geologist archeologists, environmental engineers & surveyors.

A

Brunton Compass

20
Q

is the typical military field compass, and is principally to measure or layout magnetic bearings.

A

Lensatic Compass

21
Q

also known as CIRCUMFERENTOR is an instrument used in surveying to measure horizontal angles.

A

Surveyor Compass

22
Q

is similar to the surveyor’s compass, except that it has no sight vanes.

A

Plain Pocket Compass

23
Q

the graduation can be found on a rotating card instead of being on the compass box.

A

Prismatic Compass

24
Q

is another type of pocket compass, which is usually made of aluminum or some type of metal which does not affect the free movement and positioning of the magnetic needle

A

Forester Compass

25
Q

the engineer’s transit has a compass box which is similar in construction to the surveyor’s compass.

A

Transit Compass

26
Q

Is the horizontal angle and direction by which the needle of a compass deflects from the meridian at any particular locality.

A

Magnetic Declination

27
Q

Consists of a series of successive straight line that are connected together.

A

Traverse

28
Q

process of measuring the lengths and directions of the sides of a traverse. (Purpose: to find the position of certain points.)

A

Traversing

29
Q

a traverse which are normally used for exploratory purposes, have the disadvantage that arithmetic checks are not available.

A

Open Traverse

30
Q

a traverse that begins and ends at the same point. It offers simple checks and adjustments for both angles and distances.

A

Closed Traverse

31
Q

The ___ of a line is its projection on the north-south meridian.

A

Latitude

32
Q

The ___ of a line is its projection on the east- west line.

A

Departure

33
Q

When latitudes are added together, the resulting error is called the __.

A

Error in Latitudes (E)

34
Q

The error resulting from adding departures together is called the __.

A

Error in Departures (ED)

35
Q

True or False. If the measured bearings and distances are plotted on a sheet of paper, the figure will not close because of E₁ and ED.

A

True

36
Q

A popular method for balancing errors is called the compass or the
___ rule.

A

Bowditch

37
Q

it is best suited for surveys where the sides of the traverse are measured by the stadia or subtense bar method.

A

Transit Rule

38
Q

A type of area where area can be found by dividing the lot into a series of triangles

A

Area By Triangles

39
Q

A type of area where scaled drawing is marked off in squares of unit areas then counted. This is used to approximate areas.

A

Area by Coordinates Squares

40
Q

A type of area where the polar planimeter is a mechanical device used to determine the area of any shape of figure plotted to a known scale by directly tracing the perimeter and reading the result from the scale.

A

Area by Polar Planimeter

41
Q

A type of area where the method of coordinates is based on the following rule in analytic geometry: If the vertices of the figure are taken in order around the figure, the area is equal to one-half the sum of the products of each ordinate multiplied by the difference between the two adjacent abscissas always subtracting the preceding from the following abscissa.

A

Area By Coordinates

42
Q

is the distance of the midpoint of a line to the reference meridian.

A

Meridian Distance

43
Q

A type of area where the method is an adaptation of the coordinates method and is convenient to use when the latitudes and departures of the traverse are known.

A

Area by Double Meridian Distance (DMD)

44
Q

A type of area where areas with irregular or curved boundaries are usually measured by establishing a base line conveniently near and by taking offsets at regular intervals from the base line to the boundary. There are 2 rules under it; Trapezoidal Rule & Simpson’s One-Third Rule.

A

Area by Offsets from Straight Lines

45
Q

What are the 3 Common Types of Omitted Measurements?

A
  1. Omitted Measurements Are in One Side
  2. Omitted Measurements Involving Two Adjoining Sides
  3. Omitted Measurements Involving Two Non-Adjoining Sides

Surveying (Lec) (1 decks)

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