CONSTRUCTION INTELLIGENCE / REVISION COMPARISON
Compare Plan Revisions, Flag Every Change
Send us two plan or schedule revisions. Mirage flags exactly what changed and where within a week, so your team can assess the schedule impact before it becomes a delay claim.
Running at OCBM.
THE REALITY
Identifying what changed between one plan revision and the next used to mean a side-by-side visual comparison. It introduced errors and regularly missed delta items on complex sections, and by the time a change was noticed, its schedule impact was already someone's problem.
WHAT MIRAGE DOES
Every revision compared, every change flagged
Compares revisions automatically
On every new revision, Mirage compares it against the prior version and generates a structured delta report, no manual side-by-side comparison required. Runs on plan sets, schedules, and specification documents alike.
Names exactly what changed, and where
Every flagged change points to the specific sheet, clause, or quantity that differs, with both versions referenced. Nothing is summarized into a vague "revised" note that leaves your team re-checking anyway.
Feeds your existing scheduling process
The structured delta drops into the scheduling and document workflow you already run, connecting to Procore, Autodesk, and the systems already in place. Your team applies the impact assessment; Mirage removes the manual comparison step.
THE OUTPUT
Every change, named and located
| Item | Rev A | Rev B | Change Type | Location |
|---|---|---|---|---|
| Turnout geometry, No. 10 crossover↳ Reduced radius on this crossover falls outside the tolerance stated in the applicable spec, flagged for review before it's applied. | Standard radius | Reduced radius | Geometry deviation | Sheet C-14 |
| Work zone WZ-08 | Not present | Added | New scope | Sheet C-22 |
| Clearance requirement, Section 6.1↳ Clearance value increased by 25 mm between revisions, flagged so the schedule and procurement impact can be assessed before proceeding. | 150 mm | 175 mm | Value change | Sheet 21, profile |
| Rebar cover, Section 03 20 00 | No change | No change | None | Sheet S-108 |
What goes in, what comes out
- Who uses it
- Project managers, design and methods engineers, estimators and commercial teams on general contracting, heavy civil and EPC projects, wherever a new drawing set arrives after quantities or prices were fixed.
- What you send
- Two revisions of the same drawing set, as your team receives them, or access to the folder where new revisions land. Specifications and schedules are compared the same way.
- What comes back
- A delta report: every element added, removed or modified, the sheet and location in each version, and the quantity difference wherever the element was measured.
- Where your team decides
- Mirage flags; your engineers decide what each change means for scope, cost and schedule. Nothing becomes a change order or a schedule revision without them.
- What it does not do
- It does not run critical-path or float analysis, and it does not decide whether a change is compensable under your contract.
PROOF
What teams see once revisions stop hiding changes
OCBM
Dedicated agent compares drawing revisions and tender documents to surface discrepancies before submission
100% of quantities traceable to a source drawing
Every flagged inconsistency reaches an engineer before it's acted on
Ready to see what changed on your next revision?
Send us two revisions from an active project, and we'll show you exactly what the delta report flags.
How a deployment runs: Observe, Map, Build, Run, Expand. See the method
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