Wind is one of the quickest ways a routine lift or platform job becomes high risk. Gusts, turbulence around structures and the sail area of loads can tip machines or pull them off-line in seconds. The right call is often to stand down earlier than people expect, secure the kit properly, and restart on a clear basis. That means working to manufacturer limits, monitoring real conditions rather than assumptions, and treating gusts and down-draughts as critical.
TL;DR
/>
– Know and record the wind limits for each crane and MEWP, including any lower limits set by the lift plan or platform task.
– Measure the wind at the right spot with working anemometers and consider gusts, turbulence and shelter effects.
– Act early: stop, secure and weathervane/stow before conditions deteriorate; don’t “just finish the lift”.
– Restart only after a competent person confirms conditions, equipment and load are all within limits and controls are in place.
Wind-stop decisions for cranes and MEWPs: the controls playbook
# 1) Set the limits before the shift
/> Every crane and MEWP has a manufacturer’s maximum permissible wind speed; note it clearly in the lift plan or access task brief, along with any lower threshold due to load sail area or boom length. For cladding, glazing and large signage, the load can be the main wind problem – build those limits into the plan. Identify how you’ll measure wind for that operation: tower crane anemometer at jib level, mobile crane-mounted device, and a handheld at working height for MEWPs. Record who can make the stop call (Appointed Person, crane supervisor, MEWP supervisor) and make it explicit that any worker can pause for safety.
# 2) Plan around forecasts but run on live data
/> Use the daily forecast to schedule lifts and platform work into calmer windows, and brief the team on expected gusts, wind shifts and down-draughts from structures. But treat forecasts as planning aids only. On the day, rely on site anemometers, observed gusts, moving clouds, and surrounding structure effects. Adjust exclusion zones where turbulent flow is likely – corners of buildings, gaps in hoarding, scaffold fans and roof edges can funnel wind.
# 3) Operate with real-time triggers and clear comms
/> Agree in the briefing the exact trigger to pause – for example, reaching a percentage of the limit, gust spikes, or a trend of rising wind. The operator must be able to stop immediately without pressure to “finish the piece”. Maintain clean radio comms and keep a runner or supervisor free to move between the crane/MEWP and ground team. Establish a simple escalation route: stop, secure, inform, review, and either stand down or adapt the plan with competent sign-off.
# 4) Stop early and secure properly
/> Stopping is not the hazard; stopping late is. For cranes, follow the OEM and lift plan: lower the load, land it safely, weathervane tower cranes as designed, and stow the hook. For mobile cranes, retract/stow the boom and ensure outriggers and mats are safe to de-rig only when conditions allow. For MEWPs, lower to ground, isolate power, shelter the machine from traffic and wind-blown debris, and secure panels or loose materials nearby. Extend the exclusion zone while operations are stabilised; wind can still move unsecured items during stand-down.
# 5) Restart with a reset, not a shrug
/> When conditions improve, don’t drift back into work. A competent person should confirm wind is within limits with a current reading, re-check the load, rigging, radius and ground conditions, and confirm workers are briefed. For MEWPs, verify that the platform and surrounding area are clear of loose materials, and that the task is still appropriate in the residual wind. Record the restart decision and any changed controls in the site diary or permit.
A site moment: civils lift under a gust front
/> On a dual carriageway widening job, a 90-tonne mobile crane is installing steel parapet panels onto a new bridge deck while a boom MEWP trims fixings beneath. By mid-morning the forecast “fresh breeze” becomes a line of darker cloud moving fast across open farmland. The anemometer on the crane shows rising gusts creeping towards the planned threshold, while the MEWP operator feels the basket twitch more than the previous lift. The crane supervisor calls a pause as a long, flexible panel starts to weathercock on the taglines. The team lands the panel, the MEWP lowers, and the area is held as kit is stowed. Ten minutes later a stronger squall hits, flicking loose sheet from a nearby stack that would have been in the lift path. After twenty-five minutes conditions settle; the Appointed Person reconfirms limits, adjusts the lift orientation to reduce sail, and the job restarts without drama.
Pitfalls on windy days
# Treating averages as reality
/> Using only the “steady” wind reading and ignoring gust spikes leads to surprises. Gusts and turbulence cause the unpredictable movements that topple machines or swing loads.
# Believing the building is a windbreak
/> Edges, corners, and openings often accelerate wind. Urban canyons around high-rise work can create severe gusting that exceeds open-area readings.
# Assuming the OEM limit covers every load
/> Manufacturer limits are for the machine, not for a giant panel acting like a sail. Large, light items often require lower working limits and more control measures.
# Forgetting to secure during stand-down
/> Stopping is not enough if sheet, nets, pallets and waste nearby can become missiles. Poor housekeeping turns a safe stop into a site-wide hazard.
Wind readiness checklist for lifting and access
/>
– Confirm the manufacturer’s wind limit for the exact crane/MEWP configuration and record it in the method statement and briefing.
– Identify the load or task sail area and, if needed, set a lower working limit with the Appointed Person or supervisor.
– Fit, test and zero the crane anemometer and have a calibrated handheld available for the working height of MEWPs.
– Brief triggers to pause and who makes the call; include gust thresholds and turbulence cues around structures and hoarding.
– Establish wider exclusion zones for windy operations and clear loose materials, sheet and waste from the drop zone and approach.
– Prepare secure-stop steps: where to land loads, how to weathervane or stow, how platforms will be isolated and barricaded if work is suspended.
Bottom line for windy operations
/> High wind decisions aren’t about heroics; they’re about discipline and timing. Teams that set limits early, measure properly, and stop before the gust arrives rarely feature in incident reports.
# Over the next week: make wind calls easier
/>
– Capture wind limits for all cranes and MEWPs on a single page at the site gate and in the lift pack.
– Install or relocate anemometers so they reflect the true working height and orientation of operations.
– Walk the site with supervisors to identify wind tunnels, scaffold edges and temporary openings that could amplify gusts.
– Rework lift plans and MEWP permits to include gust triggers and secure-stop sequences, then brief them at toolbox talks.
– Arrange a quick drill: practice the stop–secure–inform routine with radios live and exclusion marshals in place.
What to watch next is how well crews stick to their own triggers when programme pressure bites and the wind edges up again. If the stop call is respected and secured properly, lifts and platform work can run safely without becoming a weather lottery.
FAQ
# How should we measure wind for a crane or MEWP on site?
/> Use the crane’s fitted anemometer for lifting and a handheld anemometer at the platform’s working height for MEWPs. Readings should be taken where the load or platform actually is, not at the site office. Keep an eye on gusts and trends, not just the average.
# Who decides to pause a lift or platform task when the wind picks up?
/> The lift plan or access method should name the competent person who makes the stop call, typically the Appointed Person, crane supervisor or MEWP supervisor. That said, anyone who sees unsafe conditions should call a pause. The key is to agree triggers in the briefing and back the decision on the radio.
# What if the wind rises mid-lift with a load on the hook?
/> Land the load in the safest available place without rushing, keeping people clear and taglines controlled. Once safe, follow the secure-stop steps in the plan: weathervane or stow, isolate, and hold the exclusion zone. Only restart when a competent person confirms conditions and controls are within limits.
# Do built-up areas make wind risk better or worse for platforms?
/> They often make it worse because buildings, hoarding and scaffold create turbulence and funnelling. A sheltered feel at ground level can hide strong gusts higher up where the basket is working. Take readings at working height and consider larger exclusion zones and lower thresholds in urban “canyons”.
# How should multiple subcontractors be briefed on wind controls?
/> Include wind limits and stop triggers in the daily coordination meeting and toolbox talks, not just in the lift plan. Make sure traffic marshals, fit-out crews and delivery drivers understand exclusion zones and stand-down signals. Record decisions in the daybook so handovers and night shifts operate to the same rules.
