Geoid Deformation and Elevation Affection Caused by Building Loading

Based on the loading tide theory,the ground vertical deformation and the geoid undulation caused by loading of neighboring buildings are studied.Further more,the influence on elevation is also considered.The result shows that the ground vertical deformation and the geoid undulation have both reached millimeter magnitude.So it is obvious that the building loading has affected the precise engineering surveying a lot;and it must be seriously considered during the future applying.