One thread from source
to design narrative.

Vellint keeps requirements, evidence, engineering decisions, and review connected around the document your team has to deliver.

Follow a requirement
01

Understand.

Organise controlled project information and find the evidence that matters.

02

Decide.

Make engineering choices in context, with assumptions and open inputs visible.

03

Deliver.

Shape a reviewable narrative and preserve the history behind every revision.

Read the narrative.
Follow the evidence.

One design claim, its contractual source, and the engineering judgment between them.

A claim. Traced to its source.

Illustrative project · Clause 4.2.1
Employer’s requirements Page 38

What the contract
actually says.

“The monitoring system shall maintain recording capability in the event of a single network link failure.”

Source [1] · Technical specification

Design narrative Revision 01

Continuity.
By design.

A redundant network topology is proposed to maintain recording continuity following a single link failure. [1]

Engineering decision

Redundant paths proposed. Final topology remains subject to interface confirmation.

Evidence linked · Human review required

What this supports

Recording continuity after a single link failure.

What still needs a decision

The topology and interfaces. Redundant paths are an engineering proposal, not a quoted requirement.

Design claimSource evidenceEngineering judgment

See the effect of a change.

A changed requirement starts a new review. Inspect its effect on the design decision while the earlier revision stays intact.

Requirement changeIllustrative example
Original requirement · Saved revision

Recordings shall be retained for 30 days

Saved revision remains unchanged
Current requirement · Amendment

Recordings shall be retained for 60 days

Storage capacity requires review

Revisit the storage decision.

The retention period changes. Review capacity and confirm the engineering response before saving a new design revision.

Human review required
What Vellint makes visibleOne changed requirement · One affected design decision

See it with your project.

Bring a workflow your team knows well.

Book a demo