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Posted By SteveC
Can anyone advise me of the problems associated with working from a crane bucket or cherry picker at heights up to 65 meters.
The site is located on the high point of a range of hills so wind speeds are a significant factor
We can't use scaffolding for cost reasons.
Access is required for surveying stonework and there is a requirement to remove some stone blocks to check the state of mortars within the structure.
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Posted By CFT
You shouldn't have any problems with a lorry mount boom, plenty of room for an operator and up to 3 operatives. Several companies have them and will work on the Beaufort scale as to will they go up or not!
Last time I needed a biggy its max was 200ft.
CFT
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Posted By Richard Hinckley Steve Just wondered if you had considered the use of Industrial Rope Access for this project? Inspection and Remedial work is one of the best applications for this technique of access which is very safe, efficient and cost effective. If you would like to see any images of Rope Technicians doing thsi work then please email me richard@totalaccess.co.uk and I will send you some examples. Regards Richard
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Posted By Colin Reeves
Rope access implies a good point above the access area to anchor the rope. Whilst not clear, the implication in this question is to ascertain the safety of the structure - which would preclude a safe anchor point for ropework!
Colin
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Posted By Richard Hinckley
A good point made Colin however deadweight anchors can be utlilised which obviously do not rely on installed anchors into the rock face.
Each project of course has to be reviewed on an individual basis to assess suitability.
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Posted By SteveC
Thanks guys for the responses.
I had considered rope access but discounted it as the structural strength may not be up to it. There have been occasions where bits have fallen off.
I am not sure how the anchors would work. If they are in the form of kentledge at the top of the monument I doubt that this would be feasible.
Wind speeds appear to be the most significant factor to consider. I have been advised by a crane firm that for a 200 footer the max permissible wind speed for man basket operations is 9.8m/sec (19.029 Knots or 21.217 mph).
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Posted By Colin Reeves
Less than 19 knots, mmmmmm. Would have to wait a long time up here!!!
Colin (Shetland)
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