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Posted By andrew morris
Morning all,
finally need to seek your help on a couple of things (seperate threads) rather than just cause trouble by responding.
I have an issue with one of my sites where lorries have been told to reverse on to site as there is no way they can drive on, turn round and drive off.
My problem is, there is a significant slope (rough estimation 10%) on the access to the site and I've seen lorries skidding a few times. I want to convince management to change the situation but wondered if anyone knew if there was a maximum incline for lorries to reverse up and if anyone has experience of a simlar situation...
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Posted By Glyn Atkinson
The obvious question to ask is what causes the lorries to skid, slippery conditions underfoot on a construction site, or speed of approach / sudden braking?
Are they guided onto site in reverse by a banksperson, and if so, is that person controlling their speed by instructions and visual guidance?
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Posted By Colin Reeves
Lorries can slip on dead flat surfaces if the tyre / surface interface is inadequate. If your vehicles routinely slip then the first option is to look at the road surface and see if anything can be done to enhance adhesion (non-slip paint on concrete, bars across the roadway etc)
Colin
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Posted By safety medic
Andrew,
Hello again!
In your opinion is there space for the lorries to go in forwards, turn and driver out?
If so, this should be persued.
Secondly, if the lorries are slipping in reverse, will they slip going forwards under braking? If so then of course the road surface need to be looked at.
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Posted By andrew morris
Hi all, I was more thinking that the fully laden weight of the vehicle, along with the tractor unit reversing up a hill was causing the skid as its happening with virtually all the lorries....
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Posted By Colin Reeves
Certainly think you need to be looking at the surface. On cross-channel ferries artics go up/down this sort of slope on a regular basis, this on (often wet) steel with a non-slip surface.
Colin
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