A bid/no-bid framework for steel fabricators
Every steel bid costs estimator hours, and a fabricator that bids everything spreads its estimators thin and wins the jobs nobody else wanted. A short, consistent screen in the first day decides which invitations get a full takeoff.
- Shop fit and capacity
- Certification and spec traps
- Contract risk
- Track your hit rate
What fabricators actually weigh
| Criterion | Questions to answer in the first hour |
|---|---|
| Shop fit | Member sizes, piece weights and lengths your cranes and saws handle? Heavy built-ups, curved members or AESS your shop doesn't do well? |
| Capacity | Detailing, shop hours and erection crews available in the fabrication window, not just "this quarter" |
| Certification | Does the spec require AISC Certified Fabricator (and Certified Erector)? Do you hold the right certification and endorsements? |
| Engineering | Is connection design delegated (AISC 303-22 §3.2.3 Option 3)? Do you have an engineer lined up? |
| Special requirements | Seismic (AISC 341) demand-critical welds, AESS categories, galvanizing, fireproofing-compatible primer, Buy America |
| Contract terms | Liquidated damages, pay-when-paid or pay-if-paid, retainage, bonding, indemnity, no-escalation clauses |
| Customer | GC's payment history, change-order handling, how they treat subs after bid day |
| Competition | How many bidders and who? Is this a hard bid to 12 fabricators or a short list of three? |
| Documents | Complete drawings and specs, or a 50% set with "steel per structural"? |
| Geography | Trucking distance, erection travel, prevailing wage |
| Strategic value | New market, key customer, backlog filler for a slow shop period |
Steel-specific red flags
- Fabricator certification. Under the IBC (Section 1704.2.5), special inspection of fabrication can be waived when the work is done by a fabricator approved to perform it without special inspection, and many specs meet that by requiring AISC certification. If you aren't certified, you may be carrying the cost of in-shop special inspection or be ineligible.
- Delegated connections and member reinforcement. If the spec delegates design and the drawings show no doublers or stiffeners, AISC 303-22 §3.2.4 says reinforcement isn't in your bid, but only if the contract adopts the Code. Read the contract's modifications to 303.
- AESS. Category (AESS 1 to 4 or custom) changes shop hours dramatically. "Exposed steel" on an architectural sheet without a category is a question.
- Schedule. Steel needed on site four weeks after award, with 14-day shop drawing reviews and a mill order, doesn't work. Say so or don't bid.
- Material escalation. A no-escalation clause on a bid valid for 90 days transfers mill price risk to you. Price it or qualify it.
A simple weighted model
| Criterion | Weight | Score 1–5 | Weighted |
|---|---|---|---|
| Shop fit | 20% | 4 | 0.80 |
| Capacity in window | 15% | 3 | 0.45 |
| Customer history | 15% | 5 | 0.75 |
| Competition | 10% | 2 | 0.20 |
| Document and scope clarity | 15% | 3 | 0.45 |
| Contract risk | 15% | 3 | 0.45 |
| Strategic value | 10% | 4 | 0.40 |
| Total | 100% | 3.50 |
Illustrative weights and scores. Set a threshold (for example, bid at 3.2 or above) and a veto list that overrides the score: no capacity in the window, required certification you don't hold, unbondable, or a customer with unpaid invoices. A veto takes ten seconds and saves a week.
Measure it, then adjust
You can't set a threshold without data. Track every invitation: customer, job type, size, competitors if known, estimator hours, bid amount, result, and the winning number if you can get it.
Construction business coach George Hedley, writing in Metal Construction News, reports that fewer than 10% of contractors in his survey tracked their bid-hit-win ratio. He suggests aiming for 4-to-1 or better on private work and treating 10 or 11-to-1 as the practical ceiling for public hard-bid work. Those are one consultant's guidelines, not industry statistics, but they're a useful starting point. Track ratios by customer and job type, and by dollars bid versus dollars won, so you can see which customers actually award you work.
Bids submitted: 84 Won: 14 Hit rate: 6.0 : 1 (16.7%)
By customer: GC-A 3.0:1 GC-B 12.0:1 GC-C 4.5:1
Estimator hours on GC-B bids: 410 h for 1 award
Numbers like those make the decision for you: GC-B invitations get a quick budget number or a polite no.
Decide in a day
- Intake. Log the invitation the day it arrives: due date, documents, bonding, pre-bid meeting.
- First-hour screen. Read the spec's 05 12 00 Part 1, the contract's steel-related clauses and the structural general notes. Run the veto list.
- Score. Two people (estimator and owner or ops manager) score independently, then compare.
- Decide and tell the GC. If you decline, say so early with a short reason ("no capacity in your fabrication window"), and ask to stay on the list. Late no-bids burn relationships.
- Review quarterly. Compare scores of bids won and lost and adjust weights.
Member counts off the drawings, with the sheet attached.
RenderDraw's AI takeoff proposes steel member counts and lengths from plans, framing plans and schedules, links every row to its source, and sends low-confidence items to your estimator before the handoff to pricing.
- Counts and lengths by member. Proposed from the drawings and kept tied to the framing plan or schedule they came from.
- Uncertain items flagged. Items the AI can't confirm go to review instead of being guessed.
- Addenda through the same review. Send the changed sheets through takeoff and review, then reprice the members that changed.
- Your estimator decides. Connections, erection, coatings, risk and margin stay your call.
Test it on a real steel package
Send one structural set, ideally with an addendum. Sample files stay private while RenderDraw assesses the request. No obligation.
RenderDraw does not publish accuracy percentages or time-saved claims. Test it on your own plan set.
Questions estimators ask.
How do steel fabricators decide which jobs to bid?
They screen for shop fit, capacity in the fabrication window, certification and special requirements, contract risk, customer history, competition and document quality, then use a short weighted score with a veto list.
What is a good bid-hit ratio for a fabricator?
It depends on the market. One widely read construction business coach suggests 4-to-1 or better for private work and no worse than about 10 or 11-to-1 for public hard bids. Track your own by customer and job type.
Do I need AISC certification to bid steel?
Only if the spec requires it, but many do, often to meet the IBC's provision for waiving special inspection of fabrication by an approved fabricator. Check Part 1 of the steel spec.
What contract terms should make a fabricator think twice?
Liquidated damages without matching schedule relief, pay-if-paid clauses, high retainage, no-escalation clauses on long-validity bids, broad indemnity and deletion of AISC 303 protections.
Can RenderDraw speed up the bid/no-bid decision?
RenderDraw's AI takeoff proposes member counts and quantities from the drawings with sources, which can give a quick sense of size and complexity before you commit a full takeoff. Get a free sample takeoff.
Spend estimator hours on bids you can win.
RenderDraw's bid workflows support intake and bid/no-bid decisions. Book a demo to see them.
- Upload the plans, specs and schedules, plus an addendum if you have one.
- RenderDraw reviews the set and the scope you want tested.
- We follow up with extracted quantities, flagged items and next steps.
Where these numbers come from
We checked this guide against the standards, manufacturer documents and industry references below (last reviewed November 2026). Figures marked as rules of thumb are typical ranges, not requirements; your project documents, local code and your own cost history govern.