BIM Architectural Modeling
The architectural model captures the building's spaces and envelope: walls, floors, roofs, stairs, doors, windows, ceilings and facade elements. Rooms are tagged with names and areas, which helps when checking covered area and producing room schedules.
Detail can start simple for early design and grow as decisions are made. Agree in advance how much detail you need. A model for concept views needs far less than one used to produce construction drawings.
- Walls and floors with material layers
- Doors, windows and openings with schedules
- Stairs, ramps and railings
- Room tags with areas
- Plans, elevations and sections from one model
BIM Structural Modeling
The structural model shows the frame: foundations, columns, beams, slabs, shear walls and stairs. It is built from the structural engineer's design and is used to produce general arrangement drawings and to check that structure and architecture line up.
A structural model is not a structural design. Sizes and reinforcement are decided by a PEC-registered engineer through analysis and calculation. The model represents those decisions and makes them easier to coordinate and quantify.
- Foundations and plinth beams
- Column and beam layouts by level
- Slabs, openings and drops
- Structural general arrangement drawings
- Concrete and steel quantity estimates where briefed
Is BIM worth it for your project?
For a simple single-family house, 2D drawings are often enough. BIM earns its place when a project has several floors, a basement, complex services or multiple consultants, or when the owner wants reliable quantities and fewer clashes on site.
Talk to the provider about your goals. They should be honest about whether full BIM, a simpler 3D model or 2D drawings suit your budget and timeline.
Getting a BIM model you can keep using
A model is only valuable if it stays usable after handover. Ask for a sensible file structure, clear naming of levels and views, and a short note explaining how the model is organised. That way another consultant, or the same team a year later, can open it and continue without rebuilding parts.
Agree who owns the model and its files once the work is paid for, and keep a copy at each major milestone. If the project later moves into coordination with MEP engineers, a clean architectural and structural model makes that stage much quicker.
