Like illustrations and text, technical drawings serve as one of the primary tools for humans to express design concepts, facilitate technical communication, and organize construction and production.
They act as the “common language” in the field of engineering. As with any “common language,” there are shared standards, and picture frames also adhere to a set of such standards.
According to the current drafting standard GB/T14689-93, various standard paper sizes for drawings are described.
These must be prioritized when creating engineering drawings. If necessary, the length of the sides can be increased, but the length of the extension must comply with standard regulations.
Below are the standard sizes for A4 to A0 drawing frames.
| Drawing Sheet Code | A0 | TO 1 | A2 | A3 | A4 |
| BXL | 841X1189 | 594X841 | 420X594 | 297X420 | 210X297 |
| The | 25 | ||||
| w | 10 | 5 | |||
| It is | 20 | ||||
Each drawing frame consists of a thick frame and a title bar. If the drawing needs to be bound, a binding edge must be reserved.
For drawings that do not require binding, there is no need for a binding edge. The dimensions of the borders around the design can be uniform. (See image below.)
Title block orientation:
The title block can be placed in any corner of the drawing frame, but it is typically located in the lower right corner, as shown above.
However, there may be exceptions where it may be positioned in the top right corner or along the right side. It is recommended to include a directional icon. (See image below.)
