Work at Height
Most deaths on site are caused by:
Vehicle movements
Falling from height
Solvent inhalation
Chemical burns
The type of accident that kills most construction site workers is:
Being hit by falling objects
Falling from height
Trench collapses
Electrical accident
Approximately 70 workers each year die on construction sites, the main cause of this is:
Fire
Falls from height
Being run over by pant
Excavation collapse
How many people should be working on a ladder at one time?
One on each section of an extension ladder
One
Two
Three if it is long enough
Ladders should be set at a slope of approximately:
1 out of every 3 up
4 out for every 1 up
1 out for every 1 up
1 out for every 4 up
Why should aluminium ladders be kept away from wet lime or cement?
It will stain your clothes
The ladder may become statically charged
It may corrode the ladder
It will stain the aluminium
Before being used, a ladder should be inspected:
By the foreman
By the user
By the manufacturer
By the safety officer
Ladders should be:
In good condition
Tied or footed
Tied or footed AND at the right angle AND in good condition
At the right angle
A ladder giving access to a scaffold can generally be safely used, provided that:
The foot of the ladder is firmly wedged
It does not move when you climb up it
Any broken rungs are clearly marked
It is tied and extends at least 1 metre above the platform
What is the ideal angle for a ladder against a wall or floor?
One metre up for every metre out from the wall
One metre up for every two two metres out from the wall
Two metres up for every metre out from the wall
Four metres up for every metre out from the wall
The rung of a wooden ladder has started to split, what should you do?
Do not use it, tell your supervisor
Cut the bad bit out
Tape it up
Jump on it to see if it holds your weight
Ladders should not be painted because:
Regular repainting will be necessary
The paint will make them slippery to use
The paint may not be suitable on metal parts of the ladder
The paint may cover a defect or damaged part of the ladder
When can you work from a ladder?
For short periods and then only if it is safe to do so
When it is long enough
When it is available
When not being used for access
When working above public areas, what should be considered?
Preventing complaints from the public
The danger of falling materials
Keeping the job going
Keeping the areas open to the public
A scaffold tower must be erected by:
A trained and competent person
The hire company who supply it
The site foreman
Senior site staff
What is the minimum height of the top guard-rail of a scaffold above the edge from which someone is liable to fall?
470mm
910mm
950mm
2 metres
A working platform used for construction work, and from which a person could fall 2 metres or more, must not be used unless it has been inspected (and a report is subsequently prepared) by a competent person:
Only after an accident
That day
Within the previous seven days
Within the previous month
On a mobile elevating work platform, what should you attach your safety harness to?
A secure anchorage point inside the platform
A strong part of the structure you are working on
The boom of the machine
A nearby pipe or scaffold
You have been asked to operate a cherry-picker (mobile elevated work platform) when it is very windy. What should your FIRST consideration be?
Wear a safety harness and clip it to the structure that you are working on
Does the wind-speed to make it unsafe to use the machine
Wear an extra layer of clothing to keep warm
Tie all light-weight objects to the hand-rails of the basket
If you have to work at height and it is not possible to erect a scaffold, or use any other type of working platform or mobile elevating work platform, then you should:
Work without fall protection, provided you have a mate with you
Wear a harness and lanyard at all times
Work without fall protection, provided the weather is not too windy
Work without fall protection at all times when no one else is about
When working on a roof that has fragile, clear-plastic panels, what is the best way of preventing falls through the panels?
Make sure that everyone is told where the panels are and to avoid treading on them
Cover the fragile panels with a strong material and secure the covers to stop them being dislodged
Remove the panels carefully to leave an open space
It shouldn't be necessary to do anything, everyone knows the dangers
When working on fragile roofs:
It is safe to walk on the purlins
Walk straight across the roof to where you need to get to
As long as you avoid any fragile areas it is safe
Crawling boards should always be used
Half the deaths on construction sites are caused by which of the following?
Falls from heights
Electrical misuse
Working in trenches/confined space
Misuse of plant and machinery
What should you do if your work activity requires you to wear a full body safety harness and one is not available?
Make a harness from items found on site
Carry on working and hope that everything will be alright
Borrow a harness from a colleague
Stop work immediately and tell your supervisor that you do not have the correct PPE
Under what circumstances do the Work at Height Regulations permit a stepladder to be used on site?
Never - stepladders are banned
At any time
Provided you can't fall 2 metres or more
Only when a risk assessment shows that safer alternatives have been ruled out and the task is of low risk and of short duration
What is the BEST method of securing a ladder?
Tying it to suitable point
Using an effective ladder stability device
Wedging the ladder (e.g. against a wall)
Having the ladder footed
Of the following, which is the POOREST method of securing a ladder
Securing the base of the ladder
Tying the ladder
Having someone foot the ladder
Using a ladder stability device
Prior to moving a mobile tower scaffold, the platform height should reduced to a maximum of:
2 metres
3 metres
4 metres
5 metres
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