How to draw a house plan

The drawing method of house floor plan is as follows:

1. First, we need to draw the positioning axis. When drawing the third axis, we should consider the rationality of the layout.

2. Draw the thickness of the wall and the positioning lines of doors and windows in detail.

3. Bold and draw the best axis to fill the blank.

Draw the best doors and windows on the floor plan, and the length should be proportional.

5. Visible lines are represented by solid lines, and invisible lines are represented by dotted lines.

Subject of floor plan application:

Although the earth's surface is curved, it can be regarded as a plane in a small range, because the error between the real shape on the ground and the real shape on the map is very small and can be ignored (for example, geodetic survey in the range of 2600KM2 will draw a large-scale map of 1∶5000, with a radius error as small as 0.072mm).

On the plan, all kinds of figures and areas should be completely similar to the real thing, and the proportions in all directions should be unified. The map should reflect the exact location, size and mutual distance of these features. The distance can be measured according to the scale, and the direction can be determined by the pointer.

Graphics can be drawn on a plane. Except for nodes, there are no intersecting surfaces among edges, boundaries and plane numbers. The area surrounded by nodes and edges without G and connected by edges of planar graph G is a plane, usually denoted by R, and the loop formed by edges surrounding the plane is a boundary. The length of the boundary ring is the number of faces and is recorded as deg.

Definition of floor plan: this kind of floor plan is to draw the plane positions of various ground objects on the drawing with designated symbols according to a certain proportion, and mark representative elevation points.