Models

A model in Dlubal CALC is a file you uploaded or one that came out of RFEM. What you can do with it depends on the format, and the difference that matters is whether a browser can draw it.

What opens in the 3D viewer

A .glb exported from RFEM 6.15 or newer also carries the model's objects. Hover over a member, surface, node or support to see its properties, click to pin the card, and use Find object (MEMBER 3) to jump to one. If the file contains results, a legend shows their range.

Uploading

Drag the file into a chat, or add it in the Models panel. A geometry file is converted for display, a Dlubal model keeps its own bytes and gets a preview.

Example: you upload a 40 MB .ifc from the architect, ask what the spans are, and get an answer about the geometry the file contains. The same question about a .rf6 answers from the preview and the model data, not from a rendering of it.

What Dlubal CALC does with a model

The assistant reads what the file contains: geometry, member positions, and for a Dlubal model the structural data. It does not calculate inside the file. To build, calculate and read results in RFEM itself, connect RFEM and work against your open instance instead: Connecting RFEM.

Sharing a model

A share link lets anyone view a model in 3D without an account, for 3 credits and 30 days. Open the model and choose Share, then Create link. Copy the link right away: for security it is shown only once. The link shows the model as it is at that moment; later changes, a new upload or deleting the model do not change what the recipient sees.

A .rf6, .rs9 or .rsc is shared through its preview, never the file itself, so a recipient can look at the model but cannot download the source. The dialog lists every link with its expiry and number of views, and Revoke ends a link immediately. A revoked or expired link shows the same "not found" page as one that never existed.

A week before a link expires you get one reminder email. Extend in the Share dialog adds another 30 days for 1 credit and keeps the same link; this also works up to 7 days after expiry. After that the copy is deleted and the link cannot be revived.

Right after creating a link you can enter up to five addresses under Send by email. Each recipient gets the link in a separate email, and replies go to you. Pasted into Teams, Slack, WhatsApp or LinkedIn, the link previews with the model's title and thumbnail; such previews do not count as views. QR code shows a code for the new link and downloads it as a PNG, for printouts and plans.

Share a file in the Models panel uploads a model and creates its link in one go; uploading is free, the link costs credits as above. If you already have the model in CALC under the same RFEM model ID, it is saved as a new version instead of a second model: its name, project and photos stay, and its earlier links keep showing what was shared then. The dialog asks for a project only when you have more than one; otherwise the model goes into your project, which CALC creates if you have none yet.

RFEM 6, RSTAB 9 and RSECTION open a version of this dialog in their CALC window through Share in CALC, once the program version supports it. There the program hands over the open model as GLB itself, so there is no file to choose; the dialog explains CALC and the costs, appears in the program's language and signs you in with your Dlubal account, which creates your CALC account on first use. A model handed over this way may be up to 250 MB; files you upload yourself stay at 50 MB.

Example: you send the architect a link on Monday. On Wednesday you change the model and want them to see the update: create a new link and revoke the old one.

How many you get

Where to go next

• Files and assets for documents that are not models.
• Connecting RFEM to work on a live model instead of a file.