Ladders: Difference between revisions
SMacluskie (talk | contribs) New page: == A-frame aluminium stepladders == Aluminium steps are made of aluminium alloy, they are lighter than timber steps, very strong, rot proof and will not twist, warp or burn. '''Parts''... |
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Steps should not be used if they have any of the following defects | Steps should not be used if they have any of the following defects | ||
Broken, missing or makeshift treads | *Broken, missing or makeshift treads | ||
Loose treads | *Loose treads | ||
Dirty or greasy treads | *Dirty or greasy treads | ||
Broken stiles | *Broken stiles | ||
A defective locking bar. | *A defective locking bar. | ||
Stepladders and folding trestles are not designed for any degree of side loading and become very unstable when they are used against the manufacturer's instructions. | Stepladders and folding trestles are not designed for any degree of side loading and become very unstable when they are used against the manufacturer's instructions. | ||
Revision as of 12:55, 2 February 2010
A-frame aluminium stepladders
Aluminium steps are made of aluminium alloy, they are lighter than timber steps, very strong, rot proof and will not twist, warp or burn.
Parts
Treads – Not less than 76mm deep, they must have a non-slip surface and be horizontal when the steps are open.
Top – Not less than 100mm deep.
Back – Attached to the top by one pair of heavy-duty back flaps.
Locking Bar – Fitted to limit the degree of opening and prevent collapse.
Feet – Fitted on the bottom of all four stiles. They must be made of a non-slip material such as rubber and be easily replaced.
Sizes
Steps are sold by the number of treads; standard sizes are between two and fourteen treads.
The examples below are the approximate working heights of the steps when open.
The top step counts as one tread.
- 6 treads – 1.4 metres
- 8 treads – 1.8 metres
- 10 treads – 2.3 meters
- 12 treads – 2.8 meters
Ladder Safety
Safety checklist
Steps should not be used if they have any of the following defects
- Broken, missing or makeshift treads
- Loose treads
- Dirty or greasy treads
- Broken stiles
- A defective locking bar.
Stepladders and folding trestles are not designed for any degree of side loading and become very unstable when they are used against the manufacturer's instructions.