5D BIM software

PriMus IFC online: the 5D BIM app to use directly in your favorite browser

PriMus IFC online runs directly in the browser within the usBIM environment. You do not need to install desktop applications: simply sign in with your account, open the .dcfifc file and start working on the BIM model.

When you open a .dcfifc file configured for quantity takeoff, the workspace is organized into two main areas:

• the right panel, where you create and manage measurement rules;
• the bottom panel, where you view the embedded PriMus document with price list, quantity takeoff items and totals.

With PriMus IFC online you can:

• work from any compatible device;
• access data wherever you are;
• avoid issues related to local installations and operating-system compatibility;
• share the document with the team;
• manage access permissions and roles;
• collaborate on the same project with changes synchronized across connected users;
• collaborate on the same project in real time;
• keep the document always up to date and available online;
• integrate automatic BIM-model quantity takeoff with the features of PriMus online.

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Select entities from the model and PriMus IFC online identifies the elements to be measured

To associate the work item with the entities to be measured, PriMus IFC offers three selection modes directly on the 3D model.

Automatic selection

Select at least two similar entities in the BIM model and PriMus IFC automatically identifies all similar entities in the project.

This mode is useful when you need to measure many repetitive elements, such as walls, columns, slabs, windows/doors, or other objects with similar characteristics.

Custom automatic selection

Start from the identified IFC type and define custom filter conditions, for example:

• name contains “external wall”;
• height greater than 3 meters;
• type equal to a specific IFC class;
• model property matching a specific value.

PriMus IFC searches the model for all entities that meet the defined criteria and highlights them directly in the 3D model.

The system identifies all entities that meet the defined criteria and highlights them in the 3D model.

Manual selection

Select directly in the 3D model the entities you want to include in the quantity takeoff. This is the most suitable mode when you need to manage a few specific elements or want maximum control over the selection.

During selection, the identified entities are highlighted in color in the 3D model, so you can immediately check which elements will be measured.

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Use BIM variables, calculation functions and measurement templates

PriMus IFC online can directly use BIM entity properties as variables in measurement fields: area, length, height, volume, weight and all information available in the IFC file.

Variables are resolved automatically for each selected entity, generating the corresponding measurement rows in the quantity takeoff.

When data required for the quantity takeoff is not available among the model properties, you can also create custom variables and assign specific values to entities, such as coefficients or project-specific parameters.

For quantity calculations you can use several advanced functions:

• counter, to automatically count entities of a specific type;
• condensed sum, to obtain a single row with the total quantities;
• expanded sum, to generate a separate row for each measured entity.

You can also create positive and negative rows to manage additions, deductions and subtractions directly in the measurements.

Measurement rules created for a project can be saved as models or templates and reused in other similar projects, speeding up recurring quantity takeoff work and standardizing the BIM quantity takeoff process.

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Dynamically update the quantity takeoff whenever the IFC model changes

If the BIM model is modified, updated or replaced with a new version, PriMus IFC online lets you realign the quantity takeoff with the new design status.

With the Recalculate measurementscommand, the system:

• reruns the entity search for each rule;
• recalculates quantities using the updated model data;
• updates measurements based on the new IFC properties;
• removes rules linked to entities that no longer exist in the project;
• maintains visual control of measured entities directly on the 3D model.

At the end of the recalculation, PriMus IFC generates a change report that reports any deleted rules, reductions in measured entities and variables that are no longer valid, so you can verify the effects of changes made to the model.

This gives you dynamic quantity takeoff updates whenever the IFC model changes, reducing errors, duplication and manual review work.

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