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:
- Schedules are found — Steelflo recognizes structural schedules (Column, Ledger, Grade Beam, Footing, etc.)
- Each row is read — mark and section, even on vector/CAD pages where text isn't directly extractable
- Sections are checked — entries are checked against the AISC, EN, AS/NZS, BS/IS, GB, and Indian Standard section catalogs
- Marks are resolved — plan-page callouts (
SC1,L1) come back with the actual section from the schedule - 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.
Why This Is Hard
Most takeoff software doesn't do this because a lot has to go right at once: finding the schedule, reading a table that's often CAD-rendered, checking every row, resolving the marks, and being honest about what couldn't be resolved. Get any of it wrong 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 read from the schedule. 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? Nothing extra. Schedule reading is included in every takeoff.
Related: How to Read a Member Schedule · What Is a Column Schedule? · What Do SC1, L1, GB1 Mean?