(建筑工程)第1章3(国外英文资料).docVIP

(建筑工程)第1章3(国外英文资料) 2A312010 construction survey 2A312011 familiar with the contents and methods of construction survey A knowledge point: the construction survey and main work method The main work of construction survey Construction survey Volume method The survey of 1. known length Survey of 2. known angle 3. building plane position detail point surveying 4. building elevation position and oblique line surveying 1.: according to the distance measurement accuracy requirements can be divided into ordinary and distance The two methods of precision measuring distance. Surveying 2. angles: the completion of theodolite Measurement of plane position 3. building points: straight through Angle coordinate method, polar coordinate method, angle and Distance Intersection Method Intersection method Surveying 4. buildings: the elevation level or straight ruler The measurements are complete Typical questions: A point elevation is 36.05m, the A point to point of view, B points to the front view, leveling, forward-looking point reading is 1.12M, after the point of reading is 1.22m, Is the elevation of B points for (m). A 35.15 B 35.95 C 36.15 D Thirty-six point nine five Answer: C Solution: B point elevation of =A + after reading - point =36.05+1.22-1.12=36.15 view front view. Two knowledge points: function and construction of measuring instruments Page 1 Theodolite Level Total station 1.: the sighting of the horizontal dial, the base of three parts 2. functions: the main function is to measure horizontal angle between two directions; Secondly, it can also measure the vertical angle with the level ruler, use the sight; The principle of measurement, it can also measure the horizontal distance between two points. 1.: by the telescope, and the base level of three parts 2. functions: the main function is the difference between the two measurements, it can not be directly The point to be measured elevation, but can be known by elevation control points to push Calculate the elevation poi