When it comes to operating a MEWP, safety doesn’t start when the platform goes up — it starts before the machine even moves.
In this Smart Start Monday episode, we focus on one of the most overlooked but critical aspects of MEWP operation: ground conditions. Because no matter how advanced the machine is, it’s only as safe as the surface it’s standing on.
Every Safe Lift Starts from the Ground Up
It’s easy to assume that a surface is safe just because it looks solid. But appearances can be misleading.
Flat does not always mean level.
Solid does not always mean stable.
Ground conditions change constantly — due to weather, traffic, previous work, or hidden infrastructure beneath the surface. That’s why checking the ground must be the first step in every lift plan, not an afterthought.
Check 1: Flat Doesn’t Always Mean Level
Paved surfaces often give a false sense of security.
Roads, yards, and slabs may appear flat, but they can hide:
- subtle slopes
- dips and depressions
- cracks and damaged sections
- potholes caused by water ingress or heavy traffic
Even small irregularities can affect load distribution once a machine begins lifting. Weight shifts during elevation, and if one side settles differently to the other, stability is compromised.
Before setting up, always visually and physically inspect paving for uneven areas.
If you have to step over a pothole or adjust your footing, that’s already a warning sign.
Check 2: Ground Softness – Grass and Mud
Grass and soil are especially dangerous because they often look safe right up until they fail.
Soft ground can:
- compress under load
- shift as weight transfers
- lose bearing capacity once lifting begins
As the machine elevates, weight moves through the chassis and outriggers or wheels. On soft ground, this can cause one side to sink faster than the other — creating a tipping risk.
If the surface changes underfoot, it will change even more under a machine.
Grass and mud must always be treated as unstable unless properly assessed and protected.
Check 3: Drain Grids Are Not Load-Bearing
One of the most dangerous assumptions on site is that drain grids or covers can support weight.
They cannot.
Drain grids are designed to allow water to pass through — not to carry concentrated loads from people, plant, or machinery. Beneath the grid is often empty space, not structural support.
It only takes:
- one crack
- one weakened section
- one unexpected failure
for the surface to give way completely.
Drain grids should always be avoided when positioning a MEWP.
Ground Checks Don’t Stop Outdoors
Ground assessment isn’t just an outdoor issue.
Indoor environments bring their own risks, especially in public or finished spaces.
Tiled Floors
Tiles may look strong, but they are vulnerable to point loading. Concentrated weight from wheels or outriggers can:
- crack tiles
- cause tiles to shift
- damage the substrate beneath
This affects both machine stability and floor integrity, often leading to costly repairs.
Timber Floors
Timber flooring is not designed to support heavy machinery.
Without proper load spreading:
- boards can crack or lift
- floors can flex or fail
- structural damage can occur
Ground protection isn’t optional — it’s essential.
Using suitable mats or runner boards spreads the load and protects both the surface and the machine.
The Takeaway: Every Surface, Every Time
Ground conditions are not something you check once and forget.
They must be assessed:
- at every site
- in every environment
- before every lift
Whether you’re working on a road, grass, tiles, or timber flooring, the same rule applies:
Check the ground — every surface, every time.
Because when the ground is right, everything above it is safer.