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Specs are customizable metadata rules you can apply during takeoff.

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What a Spec is

Each spec has two core parts:
  • Target conditions: the metadata conditions that decide when the spec is eligible (for example type, pressure class, duct system, or pipe system).
  • Effects: metadata values to set when the spec applies.
In short: “If metadata matches these targets, set these other metadata values.”

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Target condition logic (AND)

Specs use AND-based target matching:
  • All target predicates in a spec must match for the spec to be considered matched.

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Add specs to takeoff workflow

You can create specs from either location:
  • Organization Settings -> Specs
  • Takeoff view -> Spec selector (from the Inspector header)
In the takeoff canvas, use the Spec selector in the Inspector header:
  1. Open the Spec selector in the Inspector header.
  2. Select a single spec to activate (or create a new one inline).
  3. The selected spec stays active until you clear it or select another.

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What happens when a spec is active

Once a spec is active, its effects run whenever pending object metadata matches the spec’s target conditions.
  • This happens during your create/edit workflow as metadata updates.
  • If target conditions do not match, that spec does not apply.

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Select a spec to prefill metadata

Selecting a spec applies that spec’s target metadata as a preset for the pending object. This is useful when you want to quickly start drawing with metadata already aligned to a known spec profile.