SCF/General/TBT-SCF-003

Scaffold Loading and Overloading

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Scaffold overloading is a leading cause of scaffold collapse, platform failure, and fatal falls on construction sites.
Every scaffold has a designed safe working load that must never be exceeded — this is stated on the scaffold design.
A loading notice must be displayed on the scaffold showing the maximum distributed and point loads permitted.
Common overloading causes include stacking too many bricks, blocks, mortar tubs, or equipment on a single platform.
Material storage on scaffolds should be minimised — only the quantity needed for the immediate task should be on the platform.
Point loads from concentrated heavy items like pallets or mortar silos can exceed the local capacity even if the total load is within limits.
Debris, rainwater, and snow accumulation add hidden weight to scaffold platforms that is not always obvious.
Scaffold ties resist the outward force from loading — overloading increases the pull on ties beyond their design capacity.
The scaffold designer and the scaffold contractor must be consulted before placing any unusual or heavy loads on the scaffold.
Workers loading scaffolds must be briefed on the maximum load limits and understand the consequences of exceeding them.

Prevent collapse	Overloaded scaffolds collapse without warning, killing workers on the platform and anyone below — load limits exist for a reason.
Tie failure	Excessive loading pulls scaffold ties from the building, causing the entire structure to lean outward and fall.
Hidden weight	Debris, standing water, and snow add significant weight that is often overlooked when assessing scaffold loading.

Don't

Check the scaffold loading notice before placing any materials on the platform.
Limit materials on the platform to only what is needed for the immediate task.
Distribute loads evenly across the platform — do not concentrate weight in one area.
Consult the scaffold designer before placing any unusual or heavy loads on the scaffold.
Clear debris, packaging, and waste from scaffold platforms regularly throughout the day.
Remove standing water and snow accumulation from platforms before loading them further.
Brief all workers using the scaffold on the maximum permitted loading limits.
Report any signs of deflection, movement, or overloading to the scaffold contractor.
Use crane or hoist systems to lift materials to height rather than stacking from below.
Check that scaffold ties are intact and secure before increasing loads on the platform.

DON'T exceed the safe working load stated on the scaffold loading notice.
DON'T stockpile materials on scaffold platforms beyond what is needed for the task.
DON'T place heavy point loads in the centre of a span without checking the capacity.
DON'T alter the scaffold to accommodate heavier loads without the designer's approval.
DON'T allow waste and debris to accumulate on platforms — it adds unplanned weight.
DON'T ignore water or snow on scaffold platforms — clear it to prevent overloading.
DON'T assume workers know the load limits — brief them before they start loading.
DON'T continue working if the scaffold shows signs of deflection or unusual movement.
DON'T lift entire pallets onto scaffolds unless the design specifically allows for it.
DON'T remove scaffold ties to make space for materials — ties prevent collapse.

See also: Scaffold Safety Awareness | Scaffold Ties & Stability

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