## The Field Engineer: A Handy Book of Practice in the Survey, Location, and Track-work of Railroads; Containing a Large Collection of Rules and Tables, Original and Selected, Applicable to Both the Standard and the Narrow Gauge ... |

### Dentro del libro

Página vii

... named , yet he inay justly claim like pureness from unworthy motive , and

certainly feels like comfort at heart to that which they must know , for having

discharged , in what

WM .

... named , yet he inay justly claim like pureness from unworthy motive , and

certainly feels like comfort at heart to that which they must know , for having

discharged , in what

**measure**it has been laid upon him , the divine obligation .WM .

Página 11

A plane angle is

centre of the circle being at the vertex ... of these parts are included in a quadrant

, which includes one - quarter of the circle , and is the

A plane angle is

**measured**by the arc of a circle included between its sides ; thecentre of the circle being at the vertex ... of these parts are included in a quadrant

, which includes one - quarter of the circle , and is the

**measure**of a right angle . Página 19

... the natural sines and cosines will be used in the application of these formulas ;

they are often more convenient than logarithms in railroad practice , especially

when the numbers which

...

... the natural sines and cosines will be used in the application of these formulas ;

they are often more convenient than logarithms in railroad practice , especially

when the numbers which

**measure**the sides of the triangle are either less than 12...

Página 26

... now have in hand materials for the preparation of physiographical maps , the

value of which to science , to the engineer , 2. For the purposes of a railroad -

survey , and to the economical geologist , it were hard to

LEVELLING .

... now have in hand materials for the preparation of physiographical maps , the

value of which to science , to the engineer , 2. For the purposes of a railroad -

survey , and to the economical geologist , it were hard to

**measure**. 26LEVELLING .

Página 32

Taking a rod accordingly , 20 feet out ,

stake , he finds it to be 11.0 instead of 5.5 , indicating that he has gone too far

down hill . Let him now reason that the rod of 11.0 corresponds to a cutting of

15.5 ...

Taking a rod accordingly , 20 feet out ,

**measured**horizontally from the centrestake , he finds it to be 11.0 instead of 5.5 , indicating that he has gone too far

down hill . Let him now reason that the rod of 11.0 corresponds to a cutting of

15.5 ...

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### Términos y frases comunes

4º curve A. D. Min added adjustment angle base called central angle centre CHORD column correct corresponding Cosine Cotang Cube curve decimal deflection degree of curvature difference direction dist distance divided elevation engineer equal error Example feet field figure fixed follows frog functions gauge given gives grade ground half height Hence inches intersection length located logarithm mark means measure method middle minutes Move multiplied natural observation opposite outer parallel practice quotient radii radius rail range record reference remaining Roots rule screws side Sine slope Square stake straight Subtract Suppose switch-rail Table Table XVI tabular taken Tang tangent telescope terminal tion track triangle turn turnout vernier vertical Ιο

### Pasajes populares

Página 18 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.

Página 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.

Página 11 - Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.

Página 11 - ... plane triangles. In every plane triangle there are six parts, — three sides and three angles. When three of these parts are given, one being a side, the remaining parts may be found by computation. The operation of finding the unknown parts is called the solution of the triangle.

Página 19 - Call the word written upon each side the name of each side ; then say, As the name of the given side, Is to the given side ; So is the name of the required side, To the required side.

Página 3 - THE LOGARITHM: of a number is the exponent of the power to which it is necessary to raise a fixed number, to produce the given number.

Página 195 - NB The minutes in the left-hand column of each page, increasing downwards, belong to the degrees at the top ; and those increasing upwards, in the right-hand column, belong to the degrees below.

Página i - SHUNK, WF The Field Engineer. A Handy Book of practice in the Survey, Location and Track-work of Railroads, containing a large collection of Rules and Tables, original and selected, applicable to both the Standard and Narrow Gauge, and prepared with special reference to the wants of the young.

Página 19 - To find an angle. Assume one side to be radius, and mark the remaining sides as before. Then say, As the side made radius is to radius, So is the other given side to the name of that side; Which determines the opposite angle.

Página 13 - If the angle is greater than 45°, look for the degrees at the bottom of the page, and for the minutes in the right-hand column ; then follow the corresponding...