Erection Engineering — Unbraced Frame Wind Check
Unbraced Frame Wind Check for steel erection field engineering.
A bare frame is a sail farm — columns without beams, beams without deck, deck without welds each have a wind limit written in the erection plan. Most frame collapses during construction are bracing-state errors, not strength errors.
Formula
Note: Erection-planning estimate only. Member weights, connection capacities and tolerances for execution must come from the issued drawings, the EOR and the erection engineer — never from a generic calculator.
Unbraced Frame Wind Check for steel erection field engineering. A free structural steel delivery & erection tool — no sign-up, no upload, instant results in your browser.
About Erection Engineering — Unbraced Frame Wind Check
Erection Engineering — Unbraced Frame Wind Check computes the governing relationship F = ½ρv²·Cd·A per column; limit per the erection bracing plan live as you type. A bare frame is a sail farm — columns without beams, beams without deck, deck without welds each have a wind limit written in the erection plan. Most frame collapses during construction are bracing-state errors, not strength errors. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Erection Engineering — Unbraced Frame Wind Check
- 1Enter your values — Erected unbraced columns, Column height, Forecast gust, Erector's bare-frame limit (sensible defaults are pre-filled).
- 2Read the live results: Wind force per column (approx).
- 3Check the "with your numbers" line to see F = ½ρv²·Cd·A per column; limit per the erection bracing plan substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Erection Engineering — Unbraced Frame Wind Check?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula F = ½ρv²·Cd·A per column; limit per the erection bracing plan with authoritative sources cited on the page (AISC 303 — Code of Standard Practice for Steel Buildings; AISC 360 — Specification for Structural Steel Buildings)
- ✓A bare frame is a sail farm — columns without beams, beams without deck, deck without welds each have a wind limit written in the erection plan.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the erection engineering — unbraced frame wind check use?+
It evaluates F = ½ρv²·Cd·A per column; limit per the erection bracing plan, exactly as published. Sources: AISC 303 — Code of Standard Practice for Steel Buildings; AISC 360 — Specification for Structural Steel Buildings. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
A bare frame is a sail farm — columns without beams, beams without deck, deck without welds each have a wind limit written in the erection plan. Erection-planning estimate only. Member weights, connection capacities and tolerances for execution must come from the issued drawings, the EOR and the erection engineer — never from a generic calculator.
When is this calculator the right tool for the job?+
Unbraced Frame Wind Check for steel erection field engineering. A free structural steel delivery & erection tool. Most frame collapses during construction are bracing-state errors, not strength errors. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
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