BIM, explained
Plain-language explanations of the ideas behind building information modelling — what BIM is, how it differs from CAD, and the concepts that make a model more than a 3D drawing.
What is BIM?
Building Information Modelling explained — what a BIM model is, how it differs from a drawing, and why geometry plus data is the whole point.
CAD vs BIM: What's the Difference?
How 2D CAD drafting and 3D BIM modelling differ — what each is good at, where they overlap, and when to use which.
What is a Building Assembly?
Walls, floors, and roofs are built up in layers. A building assembly captures that layered makeup — and why modelling it matters in BIM.
BIM for Residential & Small Commercial
BIM grew up on large commercial projects, but its benefits apply to houses and small buildings too. Here's why — and what right-sized BIM looks like.
Level of Information Need (LOIN)
What Level of Information Need means in ISO 19650 — the purpose-driven framework that defines exactly how much geometry, data, and documentation a model element needs, and no more.
LOD vs LOIN: What's the Difference?
Level of Development and Level of Information Need both describe how complete a BIM model is — but one is a fixed ladder and the other is purpose-driven. Here's how they compare and when each applies.