Elements of Surveying and Leveling: With Descriptions of the Instruments, and the Necessary Tables |
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Page 84
... determined by calculation , as in the last problem , and then , having found the horizontal distance , the vertical line is readily determined , as before . APPLICATIONS TO HEIGHTS AND DISTANCES . I. To determine the horizontal ...
... determined by calculation , as in the last problem , and then , having found the horizontal distance , the vertical line is readily determined , as before . APPLICATIONS TO HEIGHTS AND DISTANCES . I. To determine the horizontal ...
Page 87
... determined . Let us suppose that we had measured the angle of elevation DAE , and found it equal to 20 ° 15 ′ . First : In the triangle BAC , to find AC , or its equal AE . sin C : sin B :: AB : AC or AE . Applying logarithms , we have ...
... determined . Let us suppose that we had measured the angle of elevation DAE , and found it equal to 20 ° 15 ′ . First : In the triangle BAC , to find AC , or its equal AE . sin C : sin B :: AB : AC or AE . Applying logarithms , we have ...
Page 151
... determined by the inspection of a correct map of the whole . We will take , for illustration , Example 4 , page 138 , of which the plot is on the next page . Let it be required to cut off from this area , 50 acres , by a line whose ...
... determined by the inspection of a correct map of the whole . We will take , for illustration , Example 4 , page 138 , of which the plot is on the next page . Let it be required to cut off from this area , 50 acres , by a line whose ...
Page 165
... determined , makes , with the true meridian , an angle equal to the azimuth of the pole - star ; and , from this line , the variation of the needle is readily determined , even without tra- cing the true meridian on the ground . Place ...
... determined , makes , with the true meridian , an angle equal to the azimuth of the pole - star ; and , from this line , the variation of the needle is readily determined , even without tra- cing the true meridian on the ground . Place ...
Page 180
... determined on the first paper , be also determined on the second ; and then , by placing the lines joining these points , one on the other , all the lines on the two papers will have the same relative position as the corresponding lines ...
... determined on the first paper , be also determined on the second ; and then , by placing the lines joining these points , one on the other , all the lines on the two papers will have the same relative position as the corresponding lines ...
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Common terms and phrases
Applying logarithms axis azimuth back-sight base-line bearing chord clamp-screw column compass corresponding Cosine Cosine D course curve decimal Deg Distance 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 Distance latitude and departure length limb line of collimation M.
M. Sine M.
M. Sine D mantissa marked measured method multiplied notes offsets parallel 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 square chains stakes station subtract surface survey taken Tang tangent theodolite traverse vernier plate vertical plane yards