Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary Tables |
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Page 7
... Example 117 Traverse Table 121 Balancing Work . 125-129 Double Meridian Distances and Area 129-140 Problems ... 140-145 Laying Out and Dividing Land . 145-153 Public Lands 153-157 Variation of the Needle 157-162 To find the true ...
... Example 117 Traverse Table 121 Balancing Work . 125-129 Double Meridian Distances and Area 129-140 Problems ... 140-145 Laying Out and Dividing Land . 145-153 Public Lands 153-157 Variation of the Needle 157-162 To find the true ...
Page 8
... Examples and Plotting .. SECTION III . RAILWAY CURVES . Definitions and Principles . Location of the Curve ..... Location by the Chain alone Location hy two Transits ... Laying off the Ordinates . PAGE ........ 206 ..... 207-219 219-222 ...
... Examples and Plotting .. SECTION III . RAILWAY CURVES . Definitions and Principles . Location of the Curve ..... Location by the Chain alone Location hy two Transits ... Laying off the Ordinates . PAGE ........ 206 ..... 207-219 219-222 ...
Page 13
... EXAMPLES . log 327 is 2.514548 log 32.7 66 1.514548 log 3.27 0.514548 log .327 66 1.514548 log .0327 66 2.514548 USING THE TABLE . 1. To find , from the table , the logarithm of a number less than 100 . 10. Look on the first page , in ...
... EXAMPLES . log 327 is 2.514548 log 32.7 66 1.514548 log 3.27 0.514548 log .327 66 1.514548 log .0327 66 2.514548 USING THE TABLE . 1. To find , from the table , the logarithm of a number less than 100 . 10. Look on the first page , in ...
Page 15
... EXAMPLE . To find the logarithm of 672887 . The characteristic is 5. Placing a decimal point after the fourth figure , the number becomes 6728.87 . The mantissa of the logarithm of 6728 is 827886 , and the corresponding num- ber in the ...
... EXAMPLE . To find the logarithm of 672887 . The characteristic is 5. Placing a decimal point after the fourth figure , the number becomes 6728.87 . The mantissa of the logarithm of 6728 is 827886 , and the corresponding num- ber in the ...
Page 16
... EXAMPLES . 1. Let it be required to find the number corresponding to the logarithm 5.233568 . The next less mantissa in the table is 233504 ; the corre- sponding number is 1712 , and the tabular difference is 253 . Given mantissa , Next ...
... EXAMPLES . 1. Let it be required to find the number corresponding to the logarithm 5.233568 . The next less mantissa in the table is 233504 ; the corre- sponding number is 1712 , and the tabular difference is 253 . Given mantissa , Next ...
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Common terms and phrases
adjusted Applying logarithms axis azimuth back-sight base-line bearing chord clamp-screw column compass corresponding Cosine Cosine D course curve decimal DegDeg degree of curvature degrees determined difference of level divided double meridian distance draw east error example feet field-notes fore-sight given angle given line ground hence horizontal angles horizontal distance horizontal plane inch intersection LatDeg LatDegDeg LatDegDegDegDeg latitude and departure length limb line of collimation locating M.
M. Sine M.
M. Sine D mantissa marked measured method multiplied NOTE offsets parallel passed perpendicular plane of reference plot position prismoid protractor radius reading right angles scale of equal screws secant side sights similar triangles Sine Cotang slope spider's lines stakes station subtract surface survey taken Tang tangent theodolite traverse vernier plate vertical plane yards
Popular passages
Page 56 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Page 12 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Page 17 - 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.
Page 37 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Page 12 - The logarithm of a quotient is equal to the logarithm of the dividend minus the logarithm of the divisor.
Page 10 - When a number lies between 1 and 10, its logarithm lies between 0 and 1; that is, it is equal to 0, plus a decimal; if a number lies between 10...
Page 9 - The logarithm of a number is the exponent of the power to which it is necessary to raise a fixed number, in order to produce the first number.
Page 11 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers.
Page 130 - MC; hence, the double meridian distance of a course is equal to the double meridian distance of the preceding course, plus the departure of that course, plus the departure of the course itself : if .there is no preceding course, the first two terms become zero.
Page 38 - The secant of an arc is the line drawn from the centre of the circle through one extremity of the arc, and limited by the tangent passing through the other extremity. Thus, 00 is the secant of the arc AB.