BIM Model — Information Modeling for Small Construction Companies

BIM is no longer just for large companies. Information models are becoming more common and can be utilized without a large investment. This guide explains what BIM means in practice.

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What is BIM?

BIM (Building Information Modeling) means information modeling of a building. An information model is a digital twin of a building that contains 3D geometry as well as information about materials, dimensions, quantities and properties.

A traditional 2D drawing shows what a building looks like. A BIM model also tells what it consists of — how much concrete is needed, how many windows there are, how pipes run and where electrical points are located.

IFC (Industry Foundation Classes) is an open file format for sharing information models between different software. It is the "PDF" of the BIM world — standardized and widely supported.

Benefits of BIM for Construction Companies

Visual Understanding

A 3D model shows what the building looks like before construction. Errors are noticed at the design stage, not at the job site.

Accurate Quantity Takeoff

Material quantities can be extracted directly from the BIM model. No more manual measurement from drawings.

Clash Detection

Compatibility of different design disciplines (structural, HVAC, electrical) is checked before construction.

Up-to-Date Documentation

Changes are automatically updated in the model and drawings. No more outdated versions.

Automatic Quantity Lists

Accurate material quantities for bid estimation and procurement are obtained from the model.

Faster Construction

Better design means fewer errors at the job site, less demolition and rework.

How to Get Started with BIM

  • Ask the designer for an IFC file in addition to drawings. Most designers already produce it automatically.
  • Download a free IFC viewer (e.g., BIMcollab ZOOM or Solibri Anywhere). Learn basic navigation.
  • Try quantity takeoff from an IFC file with Massoi. AI automatically extracts material quantities from the model.
  • Use the model in site planning. A 3D view helps understand complex structures.
  • Develop skills gradually. You don't need a BIM design tool — it's enough to know how to read models.

Massoi reads IFC files and extracts quantities automatically. Try it yourself.

Upload IFC or drawing

See Also

Quantity Takeoff

AI-powered takeoff from drawings and IFC

Construction Industry Digitalization

Guide to getting started with digitalization

Cost Calculation

AI calculates costs from information models

Frequently asked questions about BIM

What is a BIM model?
A BIM model (Building Information Model) is a 3D model of a building that carries not just geometry but also object properties: materials, quantities, schedule, cost, and responsibility data. It is shared between designers, contractors, and the owner — each party sees and updates the data relevant to their scope.
What is an IFC file?
IFC (Industry Foundation Classes) is an open file format for exchanging BIM models between different software packages. IFC lets parties read each other's models without everyone using the same tool. It is the de facto standard for BIM interoperability.
Does a small project need BIM?
BIM is not mandatory, but it pays off even on small projects when the building is technically demanding or you want to automate takeoff and cost estimation. Public-sector projects increasingly require BIM deliverables. For small renovations, 2D drawings are still the dominant practice.
How are quantities extracted from a BIM model?
Quantities are read from the property sets on IFC objects: every wall, slab, and door carries area, volume, and count attributes. Modern takeoff software reads the IFC and produces quantity schedules automatically, eliminating the manual takeoff from drawings entirely.
What is the difference between a BIM model and a 3D model?
A plain 3D model represents only geometry — shape and volume. A BIM model adds data to every object: materials, manufacturers, costs, schedule, and maintenance instructions. BIM is essentially a database that happens to render as 3D, not just a visualization.

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