Construction · Wind
Read the gusts as well as the wind.
A weather app’s wind number is only one input to an exposed task. Match its units, forecast period and location to the equipment and the site.
Three checks before comparing a limit
- Units: keep km/h, m/s and knots distinct. If a limit uses another unit, convert both values to the same unit before comparing them.
- Quantity: determine whether the plan refers to a gust or an average wind speed. Do not compare unlike measurements.
- Location: identify the forecast point and the position where wind is measured on site. A model grid value is not a reading at a crane jib or an exposed edge.
Who sets the operating limit?
SafeWork NSW says there is no single wind speed that makes every construction activity unsafe. Its guidance points to site assessments, plant limits and clear stop-work triggers. Confirm the applicable manufacturer instructions and site plan with the responsible person.
Atmosphr does not calculate a safe lifting window. Use the hourly forecast to identify periods needing attention and the official guidance to inform the site’s review.
Make the handover specific
For example, record “wind and gust forecast reviewed for the delivery and unloading period; site monitoring and equipment limit checked by the supervisor.” Add the actual source time and local measurements. This is more useful than writing “windy today”.
Open the printable planning checklist or compare hourly wind and gusts.