In construction drawing design, do all components need to be drawn to scale?
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For example, the thickness of the flanges on the pipeline, the outer diameter of the flanges, and the thickness of the gaskets between the flanges. . . Do they all need to be drawn in proportion? There are many such detailed issues, but they don’t affect the overall picture. Is it necessary to address them all? I could not find any relevant provisions in HG20519
Personally, I think it’s not necessary to draw anything; just indicating the key dimensions is sufficient
Although it’s not necessary to draw these elements with perfect accuracy, it is essential to label them correctly~~~ That’s what’s most important. However, before starting to draw, we first create some standard flanges and valves, and drawing them at actual sizes can help determine whether the pipes designed will collide with each other~
Drawing to scale is a good habit; failing to do so can cause difficulties in future reference to the drawings and similar tasks.
I think most of it needs to be drawn in proportion! Some small details can be omitted in the overall diagram, but you should list them separately to create a more detailed version!
Some very small items cannot be drawn to scale; it’s sufficient to represent them clearly on the diagram. Of course, large flanges can be drawn to scale.
There’s no need to draw the thick bottom of the flange gasket. . Just draw the overall dimensions of the valve or large dimensions such as those of the pipes in proportion
If it needs to be shown on a diagram, try to draw it to scale; drawing to scale helps with the arrangement of various devices. It’s best to draw at a 1:1 ratio from the start, and then enlarge or shrink it later!
It depends on what kind of diagram it is. Equipment diagrams, including component diagrams, need to be drawn to scale, while schematic diagrams do not require this. Some construction drawings require not only to be drawn to scale but also to indicate all key dimensions.
This question relates to all specialties; I guess you are asking about piping diagrams! Piping diagrams include pipe layout plans, detailed drawings, and single-line diagrams. Schematic diagrams and detailed drawings do not need to be drawn to scale. On the pipeline layout plan, fittings such as flanges and valves must also be drawn to scale. Gaskets are not shown in this diagram, nor are elbows; these need to be drawn according to the project specifications. If no specifications are given, when drawing fittings smaller than DN25 in proportion (1:50), the final product drawing will not look very good. This phenomenon also occurs with fittings of large diameter; the original poster must have encountered elbows for pipes with diameters of DN500 and DN15. If the curvature radius of such elbows for large-diameter pipes is not calculated properly, when two pipes at the same elevation are arranged side by side, it’s possible that the larger curvature radius of the elbow will cause it to interfere with the adjacent pipe. In such cases, for aesthetic reasons, it’s not necessary to draw things to scale; however, when arranging them, you must pay attention to the spacing between the pipes and keep that in mind. The other requirements have already been mentioned above.
Agree with the person above; it was explained in great detail.