Why don’t drawings match existing conditions?

Because facilities change over time. Equipment moves, utilities are rerouted, and modifications are made without full documentation. Over years, drawings fall further behind reality.

Aren’t as-builts supposed to be accurate?

They’re often accurate at a moment in time. What happens afterward—during operations, shutdowns, and quick fixes—is rarely captured completely.

Can small discrepancies really cause major issues?

Yes. Minor misalignments can trigger redesign, rework, access problems, or shutdown extensions once construction begins.

Why is this risk higher in retrofits and repurposing projects?

These projects combine aging infrastructure, tight access, short shutdown windows, and undocumented changes—making assumptions especially dangerous.

Why aren’t site walks and photos enough?

They provide context, not precision. Photos don’t show true dimensions, and manual measurements leave gaps that still require assumptions.

What does “field-verified” information mean?

It means critical dimensions, clearances, and relationships are confirmed—not assumed—before decisions are locked in.

Does field verification slow projects down?

No. It reduces late-stage surprises, rework, and delays by addressing risk before construction starts.

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BIM Coordination

Reality vs Drawings: Why Plans Don’t Match the Field

February 2, 2026

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Reality vs Drawings: Why Plans Don’t Match the Field

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