坐标有关的（Coordinate related）.doc

坐标有关的（Coordinate related） The main function of coordinates in a general plan is to calibrate the relative positions of the buildings in the plan and the relative positions of the buildings or reference objects other than the plan. The coordinates used in the general building floor plan are two types of coordinate system and measurement coordinate system, all of which belong to the plane coordinate system. They are expressed in the form of square grid. The coordinate of architecture is generally self formulated by the designers of the coordinate system, its origin is determined by the makers, the two shafts are respectively expressed in A and B; the measurement coordinate system is associated with the national or local coordinate system, the two shafts are respectively expressed in X and Y. If there are two coordinate systems in the general plan, the conversion formula between them is usually given. The method of reading the coordinate in the building master plan is the same as that of the plane coordinate system in mathematics. If you know the coordinates of the four corners of a building (generally given the diagonal of two or three points), you can calculate the length, width, or distance from the other buildings through the calculation of the triangle relation. But one thing to pay special attention to is to measure the axis of the coordinate system. The X axis is north-south and pointing north. The Y axis is east-west and pointing east. That is to say in the plan under the north south axis in the horizontal direction is Y axis, the axis perpendicular to the direction of the X axis, dont read the wrong, wrong. Coordinate the total construction plans in the Yellow Sea have a uniform elevation. Said reading method is that each coordinates (X, Y) according to the marked shaft. Take any point as the origin (usually from the lower left corner of the corner as the origin of the coordinate origin) set for corresponding values minus the origin (0,0) coordinate with other