Many colleagues like to draw on the 0 th floor, because the 0 th floor is the default floor and white is the default color of the 0 th floor, so sometimes it seems that the display screen is glistening. This is absolutely not desirable. Layer 0 cannot be used for drawing, so what is layer 0 used for? Used to define blocks. When defining a block, first set all entities to level 0 (except in special cases), and then define the block. In this way, when inserting a block, the block is the layer it is inserted into.
Second, on the basis of enough, the fewer layers, the better.
No matter what major or stage the drawings are, all the graphic elements on the drawings can be organized according to certain rules. For example, architectural drawings can be divided into columns, walls, axes, dimensions, general dimensions, door and window lines, furniture and so on. That is to say, in the plan of architecture specialty, layers are defined according to columns, walls, axes, dimensions, common Chinese characters, lines for doors and windows, furniture, etc. Then, when drawing, the primitive should be placed in the corresponding layer of which category.
As long as you can classify all the primitives in the picture, the foundation of layer setting will be set up. However, is the classification of primitives as fine as possible? Wrong. For example, on the building plan, there are doors and windows, and there are many stairs. Is it divided into door layer, window layer, platform layer and stair layer? Wrong. If there are too many layers, it will cause us inconvenience in the drawing process. Just like doors, windows, steps and stairs, although they are not the same kind of things, they all belong to the warning line, so they can be managed at the same level.
Therefore, the first principle of layer setting is to have as few layers as possible on a sufficient basis. Two meanings, 1, that's enough; 2. streamline. The situation of each major is different, so you should figure out what is the most reasonable.
Third, the definition of layer color.
Layer settings have many properties, including color, line type, line width and so on. When we set the layer, we should define the corresponding color, line type and line width.
At present, when many colleagues define the color of a layer, they use whatever color they like according to their own hobbies, which is unreasonable.
There are two points to note when defining layer colors. First, different layers generally use different colors. In this way, when we draw, we can clearly distinguish colors. If the two layers are the same color, it is difficult to determine which layer the operation element is on when displaying.
The second point of the layer color definition is that the color selection should be based on the thickness of the line width when printing. When printing, the wider the linear setting, the brighter the color of the layer should be; On the other hand, if the line width is only 0.09mm when printing, then the color of this layer should be No.8 or similar color. Why are you doing this? This can intuitively reflect the thickness of the line shape on the screen. For example, look at the attached drawings. Column layer (ZU) and WAll layer (wa) are the thickest, so one is yellow and the other is cyan, which is brighter in AUTOCAD. When printing, the line widths of the filling layer (H) and the furniture layer (fur) are defined as 0. 13mm, so when selecting colors, the darker No.8 and No.83 colors are also used. The benefits of doing this, everyone in use, slowly understand.
In addition, white belongs to layer 0 and DEFPOINTS, so we don't want other layers to use white.
Fourth, the setting of line type and line width.
Before setting the line type of the layer, mention the command LTSCALE. Generally speaking, the setting value of LTSCALE should be set to 1 to avoid confusion when communicating drawings. There are three commonly used line types, one is continuous line, the other is dotted line ACAD_IS002W 100, and the third is dotted line ACAD_IS004W 100. Hide, dot, etc. Not recommended in previous CAD version 14.
The setting of line width is also particular. Whether a drawing is beautiful and clear is one of the important factors, that is, whether it has structure. A picture, thin line 0. 13, medium width line 0.25, thick line 0.35, rich. Printed drawings, at first glance, can also distinguish different types of primitives according to the line thickness, where is the wall, where is the door and window, and where is the label.
So when we set the line width, we must make it clear. If a picture is a kind of line width, which can be generally described, then it can be said that the door and window lines are thicker than the wall lines.
There is another point that we should pay attention to. Now we have two drawing specifications. One is to print in proportion. At this time, our line width can be 0. 13\0.25\0.4. If we don't print A3 specifications according to the scale, then we should set the line width to be 0.09\0. 15\0.3 smaller than the scale, so as to make the thumbnails look clear.
When setting the layer, there are mainly the above aspects to pay attention to. In addition, when drawing, it should also be noted that all attributes of graphic elements should follow the layer as much as possible. I don't want this line to be a WA layer, but the color is yellow and the line type becomes a dotted line. Try to keep the attributes of primitives consistent with those of layers, that is, try to make the attributes of primitives Bylayer. This will help to improve the clarity, accuracy and efficiency of our drawing.