Wind Force on Load — Rebar Bundle
Drag force and swing risk on a suspended rebar bundle from wind speed and exposed area.
Bundles look wind-proof — small frontal area, heavy — and mostly are. The exception is long single bars and mesh sheets, which flutter rather than push. Mesh in particular behaves like a kite above 12 m/s; the modest numbers here apply to tied, dense bundles only.
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.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Drag force and swing risk on a suspended rebar bundle from wind speed and exposed area. A free crane load, wind & rigging safety tool — no sign-up, no upload, instant results in your browser.
About Wind Force on Load — Rebar Bundle
Wind Force on Load — Rebar Bundle computes the governing relationship F = ½·ρ·v²·Cd·A (ρ = 1.225 kg/m³) live as you type. Bundles look wind-proof — small frontal area, heavy — and mostly are. The exception is long single bars and mesh sheets, which flutter rather than push. Mesh in particular behaves like a kite above 12 m/s; the modest numbers here apply to tied, dense bundles only. 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 Wind Force on Load — Rebar Bundle
- 1Enter your values — Wind speed (gust), Exposed area, Drag coefficient Cd, Task wind limit (sensible defaults are pre-filled).
- 2Read the live results: Wind force, As equivalent mass.
- 3Check the "with your numbers" line to see F = ½·ρ·v²·Cd·A (ρ = 1.225 kg/m³) substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Wind Force on Load — Rebar Bundle?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula F = ½·ρ·v²·Cd·A (ρ = 1.225 kg/m³) with authoritative sources cited on the page (EN 13001 / EN 14439 — Crane design & tower crane standards; ASCE 7 — Wind load provisions (power-law profiles))
- ✓Bundles look wind-proof — small frontal area, heavy — and mostly are.
- ✓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 wind force on load — rebar bundle use?+
It evaluates F = ½·ρ·v²·Cd·A (ρ = 1.225 kg/m³), exactly as published. Sources: EN 13001 / EN 14439 — Crane design & tower crane standards; ASCE 7 — Wind load provisions (power-law profiles). 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?+
Bundles look wind-proof — small frontal area, heavy — and mostly are. 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?+
Drag force and swing risk on a suspended rebar bundle from wind speed and exposed area. A free crane load, wind & rigging safety tool. The exception is long single bars and mesh sheets, which flutter rather than push. 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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