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#1 Posted : 04 March 2007 10:35:00(UTC)
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Posted By Andy M I have been asked to carry out a risk assessment to determine the suitablility of using a dumper, where access to site is down a steep embankment. I am looking at re-grading the embankment to reduce the gradient but wondered if there was any specific safe working gradients?
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#2 Posted : 04 March 2007 10:39:00(UTC)
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Posted By Martyn Hendrie I can't answer your question directly but, the manufacturer should provide that sort of information in the operator's manual which should be readily available.
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#3 Posted : 05 March 2007 14:06:00(UTC)
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Posted By Andrew T Hi Andy I think that the safe gradient requirement for the use of dumper trucks is the same as that of forklifts, but your manufacturers should be able to clarify this. Andy T
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#4 Posted : 05 March 2007 14:32:00(UTC)
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Posted By AGJ Hi Andy The guys are right, operators handbook, however make sure it is the correct book for the machine,, eg some dumper manufacturers advise a 1 in 3 incline other larger machines a 1 in 4.. Loaded dumpers must be reversed down hills,must not be overload (which may obstruct vision or stablity of the machine )seat belts worn where fitted hope this helps
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#5 Posted : 05 March 2007 15:09:00(UTC)
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Posted By Philip Reay With regard to the dumper working on gradients, an important point being is the skip loaded or unloaded, if loaded the skip must be facing uphill for stability purposes, in other words if you were coming down a gradient you would revers down and drive up. With regardto an excavator, the drive sprocket has got to be pushing the machine and the arm extended for stability. As the oher guys were saying always refer to the operaters manual, and if training is needed contact the CITB Regards Phil
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#6 Posted : 05 March 2007 15:14:00(UTC)
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Posted By AlB As previously stated, refer to the manufacturer. It depends on the vehicle's engine capabilities, any retarded, roll-over protection etc. I've seen a dumptruck (40 tonne dumptruck) catch fire following a 1/2 mile drive up a slope with a gradient of 1:6. What is the ground made of? Hard surfaces with good traction will act different to slippery slopes (clay based) etc. Once again, don't even attempt to guess. Refer to the manufacturer.
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#7 Posted : 05 March 2007 22:01:00(UTC)
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Posted By Andy M Thanks Guys for the info. Would have forgotten about the reversing down slope with a load on, if not mentioned here, even though i have seen it done previously on site.
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