AI That Reads Member Schedule Keys: New in Steelflo

Steelflo now reads member schedule sheets on commercial structural drawings and resolves the marks (SC1, L1, GB1) back to actual section sizes on every plan page — automatically, end-to-end.

This closes a gap that affects every commercial and industrial estimator: drawings where columns and ledgers are marked with a key (SC1) instead of labeled directly (HSS10X10X5/16). Without schedule parsing, takeoff software returns zero columns from a 60-column warehouse. With it, every callout resolves to a real section with a real weight.

How It Works (At a Glance)

When you upload a drawing with a schedule sheet:

Schedule sheet detected — the system recognizes structural schedules (Column, Ledger, Grade Beam, Footing, etc.) by their headers
Schedule table extracted — each row's mark and section are read, even on vector/CAD pages where text isn't directly extractable
Sections validated — every entry is checked against AISC, EN, AS/NZS, BS/IS, GB, and Indian Standard databases (886+ shapes)
Marks resolved — every plan-page callout (SC1, L1) is matched against the schedule and rewritten with the actual section
Concrete schedules surface for review — Grade Beams, Footings, and Continuous Footings (which aren't steel) appear as reviewable items so you can confirm or break them out

The resolved members appear in your BOM as both the mark and the section ("SC1 → HSS10X10X1/2") so you always know where each detection came from.

Real-World Result

On a recent test against a real customer's 80-page warehouse drawing set:

Before: 47 detections (mostly grid-line false positives)
After: 325 detections, including all column schedule entries resolved to real AISC sections
Schedule-resolved marks: SC1, SC2, SC3 columns + L1-L4 ledger angles
Concrete schedules (GB, F, WF) surfaced for review

Time on the takeoff: about 10 minutes for the 80-page set, including OCR on every structural sheet.

Why This Is Hard

The reason most takeoff software doesn't do this comes down to a five-step pipeline that has to work end-to-end: detect schedule pages, extract the table from CAD-rendered text, validate each row, resolve marks, surface uncertainty. Skip any step and you get an unreliable result. See why most steel takeoff software misses schedule keys for the broader pattern.

FAQ

Q: What drawings does this work on? Any structural drawing that uses a schedule key. Common on commercial, industrial, retail, education, and PEB jobs in the US, UK, Australia/NZ, and EU.

Q: What if the schedule has a section my takeoff database doesn't recognize? The mark surfaces as "Schedule? — Possible: HSS10X10X5/16" with the section text Gemini extracted. You can edit the entry once and every detection of that mark updates.

Q: Can I turn this off? The feature is on by default. You don't need to do anything to use it — just upload a drawing with a schedule.

Q: How much does this cost per takeoff? A single Gemini call per schedule sheet costs less than two cents. For most jobs that's one to three cents added to the takeoff.