实务11—15（Practice of 11 - 15）.docVIP

实务11—15（Practice of 11 - 15） 2A312000 construction technology 2A312010 construction survey 2A312011 familiar with the contents and methods of construction survey Knowledge point 1: main work and method of construction survey Main work of construction survey 1. measuring the known length 2. measurement of known angles 3. layout of detail location of building 4. building details, elevation, location and inclination of the building Construction surveying method 1. distance measurement: according to the accuracy requirements can be divided into the general distance and precision distance two methods. 2. angle measurement: use theodolite to complete 3. the layout of the detail points of the building can be achieved by the Cartesian coordinate method, polar coordinate method, angle intersection method and Distance Intersection Method Surveying 4. building height: complete level or by direct measurement ruler 09 examination questions When the construction site of the construction control network for the grid or axis form, the use of (A) building details of the plane location of the most convenient measurement. A. rectangular coordinate method B. polar coordinate method C. angle intersection method D. Distance Intersection Method Typical questions: A point elevation is 36.05m, take A point as the back view point, B point as the front view point, leveling survey, front view point reading is 1.12M, rear view point reading is 1.22m, then the elevation of B points is () M. A. 35.15 B. 35.95 C. 36.15 D 36.95. Answer: C Train of thought: B point elevation, =A point elevation + back view reading - forward view reading =36.05+1.22-1.12=36.15. Knowledge point two: function and application of construction survey instrument 1. components: theodolite alidade, horizontal disc, base part three 2. functions: the main function is to measure horizontal angle between two directions; secondly, it can also measure the vertical angle; the level ruler, using distance measurement principle, it ca