All 12 guides on this topic
What IFC model checking actually means, how the three validation layers work, and how to use a checker to enforce quality gates before every model delivery.
Is the wall where the model says it is? Slice the scan and the model at the same height and every part of the scan is coloured by its distance to the plan.
A classification code is the bridge between a model and everything that happens after it — cost plans, specifications, asset registers. In IFC it is not a property but a relationship, which is why so many exports lose it. How it works, which system to use, and how to check it.
IDS turns "the model must contain the fire rating" from a sentence in a PDF into a file a machine can check. Here is what the six facets actually test, where most IDS files go wrong, and how to run one against your IFC in a browser.
Your BEP says 'deliver a quality IFC' but never defines how to check it. Here are the three real ways to validate an IFC file — the buildingSMART service, IfcOpenShell, and an in-browser health check — what each one actually catches, and the pre-send checklist that stops models being rejected at the CDE.
A practical workflow for BIM coordinators: export, schema check, quality check, fix errors, IDS validation, archive the report. With checklists for each stage and ISO 19650 stage gate guidance.
The ten errors that appear most often in IFC files delivered on real projects — what causes them, how a model checker detects them, and how to fix them at the source.
An IFC Health Score is not a percentage — it is a decision-making tool. How it is calculated, what each band means, how to set thresholds in the BEP, and how to use it as a quality gate at every project stage.
Every BEP demands a 'quality IFC' and almost none define it. This is the complete, practical guide to what IFC quality actually means — the failure categories that get models rejected, how to check each one, and a repeatable workflow that gets you to a deliverable file.
Your project BEP says 'deliver a quality IFC'. Nobody defines what that means until the model gets rejected. An IFC Health Score turns vague quality requirements into a number everyone can track.
Duplicate GUIDs, orphan elements, and broken spatial hierarchies account for over 80% of IFC delivery rejections. Here's how to spot and fix each one before the model reaches the CDE.
What is an IFC Health Score, how is it calculated, and why should every project BEP specify a minimum threshold before CDE delivery?