Rigging Hardware — Round Sling (Colour Code)
Round Sling (Colour Code) capacity check with the standard derating rules applied.
The EN colour code makes capacity visible at ten paces — violet 1 t, green 2 t, yellow 3 t, up to orange 10 t — but colour only identifies NOMINAL rating: the tag still rules, and a sling with an unreadable tag is scrap by definition. Polyester rounds also share webbing's fatal allergy to edges.
Formula
Note: Rigging and crane decisions are life-safety critical. This calculator is a planning aid — the load chart, sling tags, site lift plan and a qualified lift director govern every real lift.
Round Sling (Colour Code) capacity check with the standard derating rules applied. A free crane load, wind & rigging safety tool — no sign-up, no upload, instant results in your browser.
About Rigging Hardware — Round Sling (Colour Code)
Rigging Hardware — Round Sling (Colour Code) computes the governing relationship EN 1492-2 colour code: violet 1 t → orange 10 t, × hitch factor live as you type. The EN colour code makes capacity visible at ten paces — violet 1 t, green 2 t, yellow 3 t, up to orange 10 t — but colour only identifies NOMINAL rating: the tag still rules, and a sling with an unreadable tag is scrap by definition. Polyester rounds also share webbing's fatal allergy to edges. 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 Rigging Hardware — Round Sling (Colour Code)
- 1Enter your values — Colour (1 violet · 2 green · 3 yellow · 4 grey · 5 red · 6 brown · 7 blue · 8 orange), Hitch factor (sensible defaults are pre-filled).
- 2Read the live results: Capacity in configuration.
- 3Check the "with your numbers" line to see EN 1492-2 colour code: violet 1 t → orange 10 t, × hitch factor substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Rigging Hardware — Round Sling (Colour Code)?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula EN 1492-2 colour code: violet 1 t → orange 10 t, × hitch factor with authoritative sources cited on the page (ASME B30.5/B30.9/B30.20 — Cranes, slings and below-the-hook devices; Wire Rope Technical Board — Wire Rope Users Manual, 4th ed.)
- ✓The EN colour code makes capacity visible at ten paces — violet 1 t, green 2 t, yellow 3 t, up to orange 10 t — but colour only identifies NOMINAL rating: the tag still rules, and a sling with an unreadable tag is scrap by definition.
- ✓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 rigging hardware — round sling (colour code) use?+
It evaluates EN 1492-2 colour code: violet 1 t → orange 10 t, × hitch factor, exactly as published. Sources: ASME B30.5/B30.9/B30.20 — Cranes, slings and below-the-hook devices; Wire Rope Technical Board — Wire Rope Users Manual, 4th ed.. 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?+
The EN colour code makes capacity visible at ten paces — violet 1 t, green 2 t, yellow 3 t, up to orange 10 t — but colour only identifies NOMINAL rating: the tag still rules, and a sling with an unreadable tag is scrap by definition. Rigging and crane decisions are life-safety critical. This calculator is a planning aid — the load chart, sling tags, site lift plan and a qualified lift director govern every real lift.
When is this calculator the right tool for the job?+
Round Sling (Colour Code) capacity check with the standard derating rules applied. A free crane load, wind & rigging safety tool. Polyester rounds also share webbing's fatal allergy to edges. 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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