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INTRODUCTION 1 Why Study Engineering Surveys?
Uses of Surveys
Factors Controlling Surveys
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adjustment aerial photographs altitude approximately azimuth backsight bearing boundaries camera celestial sphere clinometer Coast and Geodetic compass computed contour interval control points coordinates corners correction cross-hair determined difference in elevation distance dumpy level engineer Ephemeris equation example eyepiece feet field notes focal length foot Geodetic Survey Greenwich mean grid highway hour angle inch instrument intersection land surveys latitude lens line of sight magnetic declination mark mean measured ment meridian method miles necessary needle observation obtained parallax parallel Photogrammetry plane table plat plate bubbles plotted plumb bob Polaris position precise principal point principles probable error procedure rear tapeman recorded refraction right ascension rod reading scale shown in Fig slope stadia stake standard station stereoscopic surface surveyor taken tape telescope temperature template tion transit traverse triangulation true United States Coast usually velocity vernier vertical angle