The title block
The title block is the part of a drawing that says who is responsible for it. It sits in the bottom right corner of every sheet, it is filled once, and the same drawing is used on screen, in the PDF and in the DXF. There are two layouts, carrying the same mandatory data.
Technical: the standard legend
A closed grid, which is what ABNT NBR 10068 draws and what a drawing going to site should carry. It holds everything that standard requires: the identification of the firm, the project title, the location, the drawing title, the scale, the date, the sheet number and the engineer of record with their registration. The revision index and the drawn-by and checked-by fields come from ISO 7200, and are in there too.
Studio: the same data, for presentation
No closed grid. A heavy rule across the top, the project name set large, and a strip of metadata along the bottom. It is meant for a cover sheet, a proposal or a presentation. What goes to site uses the technical layout, because that is the one the standard draws.
The fields
| Field | What it carries |
|---|---|
| Company and logo | The firm issuing the drawing. The logo is an image you upload; without one, the company name is set as a wordmark. |
| Project and drawing title | The name of the work, and the name of this particular drawing. Two different things, and both are required. |
| Client and location | Who the work is for and where it is being built. Required by the standard, and easy to forget. |
| Drawn by, checked by, engineer of record | Three people, each with their professional registration number alongside. The third is the one who signs. |
| Scale, date, sheet, revision | Scale and sheet number come from the sheet itself. The revision index starts at 0 and is yours to advance. |
Where it sits, and why the space is always the same
The standard fixes the corner and it fixes the width: 178 mm on A4, A3 and A2, and 175 mm from A1 up. The height it does not fix. The technical layout is 40 mm tall and the studio one is 32 mm, but the space reserved on the paper is always 40 mm, the taller of the two.
That is deliberate. If the reserved band changed with the layout, switching from studio to technical would push views that were already placed. Reserving the larger height always means the choice of layout is a choice about the drawing, never about the composition of the sheet.
The preview is the print
The title block is assembled once, into plain geometry that knows nothing about the screen, the PDF or the DXF. The canvas draws that geometry, the DXF writes the same geometry as lines, and the preview in the layout selector renders it too. Choosing a layout in the preview shows you literally what will be printed, because it is the same drawing.
Text is measured before it is placed. A long project name would otherwise run over the cell next to it, and none of the three outputs can measure text the way a browser can. So the width is estimated from a table of letter widths, with margin: it trims a little earlier than strictly necessary, and never lets a name spill.
It belongs to your browser, not to the project
Company, logo, engineer of record and registration numbers are the same on every job you draw, so they are saved in the browser rather than inside the project. Fill them once and every new project on that machine starts with the title block already filled.
The consequence: opening the same project on another machine, in another browser, or after clearing site data starts from the empty title block. The project is intact; the letterhead is not part of it. Fill it again there, and it stays.