Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary TablesA.S.Barnes, 1871 - 161 páginas |
Dentro del libro
Resultados 1-5 de 23
Página 109
... departure of that course , and is east or west , according N H C B G W- E A S as the course lies on the east or west side of the meridian passing through the point of beginning . 71. It is found convenient , in explaining the rules Thus ...
... departure of that course , and is east or west , according N H C B G W- E A S as the course lies on the east or west side of the meridian passing through the point of beginning . 71. It is found convenient , in explaining the rules Thus ...
Página 110
... departures , the algebraic signs , and - . • - We shall , therefore , consider every northing as affected with the sign + , and every southing as affected with the sign We shall also consider every easting as affected with the sign + ...
... departures , the algebraic signs , and - . • - We shall , therefore , consider every northing as affected with the sign + , and every southing as affected with the sign We shall also consider every easting as affected with the sign + ...
Página 114
... departure , which is west , is represented by AH . Of the course BC , the northing is expressed by BG , and the departure , which is east , by GC . Of the course CD , the southing is expressed by CI , and the departure , which is east ...
... departure , which is west , is represented by AH . Of the course BC , the northing is expressed by BG , and the departure , which is east , by GC . Of the course CD , the southing is expressed by CI , and the departure , which is east ...
Página 121
... departure corre- sponding to bearings that are expressed in degrees and quarters . of a degree , from 0 to 90 ° , and for every course from 1 to 100 , computed to two places of decimals . The following is the method of deducing the ...
... departure corre- sponding to bearings that are expressed in degrees and quarters . of a degree , from 0 to 90 ° , and for every course from 1 to 100 , computed to two places of decimals . The following is the method of deducing the ...
Página 122
... departure of a course may be computed to any desirable degree of accuracy . Let AD represent any course , and NAD ACB , expressed in degrees and = minutes , be its bearing . Let AC be the unit of measure of the course , and also the ...
... departure of a course may be computed to any desirable degree of accuracy . Let AD represent any course , and NAD ACB , expressed in degrees and = minutes , be its bearing . Let AC be the unit of measure of the course , and also the ...
Otras ediciones - Ver todas
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.