PASMA Environmental Considerations

Question 1

At what Beaufort scale wind force should work on a tower scaffold cease?

Accepted Answer

Force 4 (moderate breeze, 13-17 mph)

Answer

Force 2 (light breeze)

Answer

Force 7 (near gale)

Answer

Force 10 (storm)

Question 2

What are the signs of Beaufort Force 4 wind that would trigger stopping work on a tower?

Accepted Answer

Small branches move, dust and loose paper are raised, small waves on inland waters

Answer

Trees being uprooted

Answer

Complete calm with no air movement

Answer

Chimney pots and roof tiles being blown off

Question 3

How does rain affect the safety of working on a tower scaffold?

Accepted Answer

Rain creates slip hazards on platforms and ladders, reduces visibility, and can make components slippery and harder to grip

Answer

Rain has no effect on tower safety

Answer

Rain improves stability by adding weight

Answer

Rain only affects wooden towers

Question 4

What precautions should be taken when using a tower scaffold in freezing conditions?

Accepted Answer

Check for ice on platforms, rungs, and components; apply grit to platforms; ensure operatives wear appropriate clothing and gloves without losing grip

Answer

No special precautions are needed in the cold

Answer

Work faster to stay warm

Answer

Only use the tower before sunrise

Question 5

What is the risk of using a tower scaffold in direct strong sunlight?

Accepted Answer

Heat exhaustion and dehydration of operatives, thermal expansion of metal components, and glare affecting vision

Answer

No risks from sunlight

Answer

Sunlight strengthens the aluminium

Answer

UV light sanitises the tower

Question 6

What should be done with a tower scaffold if a storm is forecast overnight?

Accepted Answer

Dismantle it or reduce it to minimum height, secure all loose items, and consider tying the tower to a fixed structure

Answer

Leave it as it is — it will be fine

Answer

Move it to the centre of the car park

Answer

Cover it with a tarpaulin