Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary TablesA.S.Barnes, 1871 - 161 páginas |
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Página 26
... square abcd . Divide the sides ab and dc each into ten equal parts . Draw af , and the other nine parallels as in the figure . Produce ba , to the left , and lay off the unit of the scale any convenient number of times , and mark the ...
... square abcd . Divide the sides ab and dc each into ten equal parts . Draw af , and the other nine parallels as in the figure . Produce ba , to the left , and lay off the unit of the scale any convenient number of times , and mark the ...
Página 56
... square of the hypothenuse is equal to the sum of the squares of the two other sides . Or , the parts may be found by Theorems IV . and V. EXAMPLES . 1. In a right - angled triangle BAC , there are given the hypothenuse BC = 250 , and ...
... square of the hypothenuse is equal to the sum of the squares of the two other sides . Or , the parts may be found by Theorems IV . and V. EXAMPLES . 1. In a right - angled triangle BAC , there are given the hypothenuse BC = 250 , and ...
Página 65
... square of the length of the standard : the square of the length of the chain , the area found : the true area . MEASUREMENT OF ANGLES . 22. We come next to the measurement of angles , and for this purpose , several instruments are used ...
... square of the length of the standard : the square of the length of the chain , the area found : the true area . MEASUREMENT OF ANGLES . 22. We come next to the measurement of angles , and for this purpose , several instruments are used ...
Página 95
... square described on the unit of linear measure . Thus , 1 square foot , 1 square vard or 9 square feet , 2 square chain , or 16 square rods . 1 foot . 1 yard = 3 feet . 1 chain - 4 rods . When , therefore , the linear measures are feet ...
... square described on the unit of linear measure . Thus , 1 square foot , 1 square vard or 9 square feet , 2 square chain , or 16 square rods . 1 foot . 1 yard = 3 feet . 1 chain - 4 rods . When , therefore , the linear measures are feet ...
Página 96
... square rods . A square rod is called a perch . 51. Land is generally computed in acres , roods , and perches , which are respectively designated by the letters A. R. P. When the linear dimensions of a survey are chains or links , the ...
... square rods . A square rod is called a perch . 51. Land is generally computed in acres , roods , and perches , which are respectively designated by the letters A. R. P. When the linear dimensions of a survey are chains or links , the ...
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Términos y frases comunes
Applying logarithms axis azimuth back-sight base-line bearing chord clamp-screw column compass contour lines corresponding Cosine Cosine D Cotang course curve decimal degree of curvature degrees determined difference of level divided double meridian distance draw drawn east error example feet field-notes fore-sight given angle given line given point ground height of instrument hence horizontal angles horizontal distance horizontal plane inch intersection latitude and departure length limb line of collimation M.
M. Sine mantissa marked measured method multiplied notes offsets paper parallel passing perpendicular plane of reference plot position prismoid protractor radius reading right angles scale of equal screws secant side sights Sine D slope spider's lines stakes station subtract surface survey taken Tang tangent theodolite traverse vernier plate vertical plane wwwwwwwww yards
Pasajes populares
Página 56 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Página 12 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 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.
Página 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.
Página 12 - The logarithm of a quotient is equal to the logarithm of the dividend minus the logarithm of the divisor.
Página 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...
Página 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.
Página 11 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers.
Página 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.
Página 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.