Conversions, Formulae, Classifications for Surveyors Flashcards

To memorize frequently used formulae, memorize conversions, basic survey measurements, and classifications.

1
Q

Conversion from Foot to Meter

A

1 foot = 0.3048 Meters

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2
Q

Conversion from Meter to Foot

A

1 meter= 3.28084 feet

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3
Q

Conversion from degrees Fahrenheit to degrees Celsius

A

°C=5/9(°F-32)

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4
Q

Conversion from degrees Celsius to degrees Fahrenheit

A

°F = °C×(9/5)+32

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5
Q

Dimensions of a square acre

A

208.71x208.71

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6
Q

Square footage of an acre

A

43560 square feet.

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7
Q

Old style USQS Quadrangle map

A

1:24,000 scale on 7.5 minute map

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8
Q

What is the length of a “Gunter’s Chain” ?

A

Edmund Gunter 100 links=66’, each link 7.92’ inches

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9
Q

What is the length of an Engineer’s Chain?

A

100’ , 1’ link.

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10
Q

Who was Benjamin Banneker?

A

Not inventor of chain, African American Surveyor from Maryland who helped to survey Washington DC in 1791. 40 markers placed, some still remain.

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11
Q

Conversion from Vara (Spanish territory measurement) to feet

A

1 vara= 2.7500005511811 feet, or divide Varas by 0.36

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12
Q

Conversion from feet to Vara (Spanish territory measurement)

A

1 foot= 0.36 Varas, or multiply foot by 0.36

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13
Q

NGS standard, 3rd order Class II

A

1:10,000

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14
Q

Traditional standard, Order AA

A

1 part in 100,000,000

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15
Q

Traditional standard, Order A

A

1 part in 10,000,000

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16
Q

Traditional standard, Order B, first order

A

1 part in 100,000 angles:(2”√N¹)

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17
Q

Traditional standard, Order B, second order, Class I

A

1 part in 50,000 angles:(3”√N)

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18
Q

Traditional standard, Order B

A

1 part in 1,000,000

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19
Q

Traditional standard, Order B, second order, Class II

A

1 part in 20,000 angles:(5”√N)

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20
Q

Traditional standard, Order B, third order, Class I

A

1 part in 10,000 angles:(10”√N)

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21
Q

Traditional standard, Order B, third order, Class II

A

1 part in 5,000 angles:(20”√N)

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22
Q

Engineering Construction (Fourth Order)

A

1 part in 2,500 or 1:2,500 angles:(60”√N)

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23
Q

1 degree curve has an arc length of?

A

100’ arc length and a radius of 5729.58

24
Q

1 minute angle at 100’ is what distance

A

.029 (or .03’) per 100’

25
1 degree angle at 100' is what distance
1.745' (or 1'-9") per 100'
26
20 seconds angle at 100' is what distance
1/8 or .01' per 100'
27
1 mile= how many feet
5280
28
1 mile= how many yards
1760
29
What is an adit
a (mining) tunnel for mine drainage, ventilation or transportation)
30
What is reversion, and regarding what
term used to define process of of adjusting a spirit level by splitting the error and adjusting ½ the error until the bubble does not change position
31
Total station is less accurate than steel tape when
the measured distance is less than 100'
32
area of a circle formula
A = π(3.14)r²
33
length of an arc formula
Arc Length = θ * r where θ (theta) where angle is radians, is angle if in degrees (π*r*θ)/180 (look to calculator for degrees min sec) (another version is L=θdπ/360°)
34
Volume of Cylinder formula
V = πr²h (height)
35
(n)⁰
Whatever the number, if raised to zero power, is =1
36
polygon formula
Sum of interior angles=(n-2)180°
37
Weight of a gallon of fresh water
8.33lbs
38
Weight of a gallon of salt water
8.54lbs
39
Formula converting Pound (lb) to Kilogram (Kg)
1lb=0.453592Kg
40
Formula converting Kilogram (Kg) to Pound (lb)
1Kg=2.20462lbs
41
1 meter is how many inches
39.37" exactly
42
1 meter in U.S. feet
3.2808333 U.S. feet also 39.37"
43
How many rods is a Gunter's Chain
4 rods (4 poles) 66ft
44
1 international foot in meters
.3048 meters
45
How many Gunter's chains in a mile
80(Gunter's Chain 66')
46
How many square feet in 10chains²?
435600 feet² (10 acres)
47
Formula for Circumference of a circle
C=πd
48
Area of a trapezoid
A=1/2h(a+b), where h is height, a and b are the horizontal sides
49
Area of sector of a circle (fractional part of circle in relationship to radial lines)
A = π(3.14)r² parts of this are arc angle/360°
50
Area of a segment of a circle (any part of circle not just along radial lines)
(θ / 360°) × πr2 - (1/2) r2 sin θ (OR) r2 [πθ/360° - sin θ/2], if 'θ' is in degrees
51
Area of a triangle (not necessarily right triangle)
A=1/2bh (where b is base, h is height)
52
Volume of a cube
V=lwh (l is length, w is width, h is height)
53
What is a prism in geometry
A solid shape that is bound on all sides by plane faces, faces other than top and bottom of a prism are called lateral faces
54
Formula of volume of Right prisms and cylinders
V=Ahₚ (the area x height of the prism (or cylinder).
55
Formula of volume of a cone
V=(πr²)h/3
56
Formula for volume of a pyramid
V=1/3Ah
57
Volume of a sphere
V=4/3πr²