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Drawing revision review
Review drawing revisions across electrical, plumbing, HVAC, fire alarm and low voltage.
Start with your trade. Keep the source drawing close.
Built around your scope
Devices, circuits and panel schedules.
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Norfolk Middle School
Fluid Cooler Replacement · Electrical
Addendum 2 · March 27, 2026
Manually reviewed example
Showing Electrical example: Starter added to the power plan.
Before · Original bid setE2.1

No starter symbol or callout at the selected location near L8.
Before PDF · page 8 (opens in a new tab)After · Addendum 2E2.1

The starter symbol and callout appear inside the revision cloud.
After PDF · page 19 (opens in a new tab)Red outline: selected change. Dashed outline: corresponding area before the change. Black revision cloud: part of the source drawing.
What changed
A spray-pump starter symbol and its location are added to E2.1, beside panel L8.
Why it may matter
The location and circuit routing need coordination. A starter was already required by the original mechanical schedule.
What to review
Check the starter quote, routing, E0.0 note 2 and the added motor-controller specification.
One manually reviewed change. Not an automated product result or a complete list of addendum changes.
Unaltered source crops · Norfolk Public Schools bid documents (opens in a new tab) · Drawings © Morrissey Engineering, Inc.
How it works
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Start with the documents your team already reviews.
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Check changes in context, with the source nearby.
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Your team makes the scope and pricing decisions.
Our intended Early Access workflow. Continue your normal review process while accuracy and coverage are being validated.
Explore an Electrical Early Access pilot, or register interest in your trade.
Start a conversation
Choose the trades you bid. Electrical is in Early Access intake; the other trades are planned.
A simple next step
Send a brief request from this page. We’ll review it and discuss availability, coverage, and terms before a pilot begins.
Early Access may miss changes. Keep your normal estimating and document review in place.
You can also email earlyaccess@revisionsignal.com directly.
The documents behind your bid
From bid invite to submission, keep scope, quantities and assumptions connected to the documents that define them.
A changed device, pipe route or equipment schedule can affect your takeoff. Review the location, tag and connected details together.
Keep scope clarifications and replacement sheets with the baseline you priced. Check what each issued revision changes before updating your estimate.
Materials, equipment, testing and responsibility notes can change without a visible drawing revision. Compare the requirement with its earlier version.
RevisionSignal supports your judgment. It may miss changes, and a finding still needs your review.
Early Access starts in Shadow Review. Verify findings against the source and continue your normal review process.
Describe your workflow in the access request. Leave out confidential drawings, specifications, and bid details.
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