Do you when tipping off your load of stone,sand,road salt etc drop the air out of your trailer first?
Maybe I’m wrong but I don’t bother unless the trailer is on a bad camber when tipping in the tarmac spreader or the wind is high,am I making a big boo-boo and asking for the airbags on the trailer to go pop 
When I have done Artic Tipper work in the past, I have not been instructed to do that, and my old boss was pretty hot on things like that, because he didn’t like the idea of unneccesary damage.
But I guess maybe the more regular lads might shed a different light on it.
A phone call and £10 gets you a copy of a guide issued by the Society of Operations Engineers, HERE.
The question of tipping with or without air was key during the consultation process. This is an area which was not covered by the original IRTE guide and the revised issue accepts that both circumstances can be valid and goes on to highlight a number of areas that should be taken into effect in both scenarios to ensure safe tipping.
well I have driven an artic bulker for more than three years and have never dumped the air out of a trailer. Nor have I ever had an airbag burst. in fact my current trailer is the only one I have ever had with a dump valve!!! And I have tipped some rubbish in some seriously dodgy places (and had a trailer over). Nor have I ever seen anyone else do it 
in fact its the first I have heard of it!!!
if you were tipping stele from a flat and the took one side of first would you dump the air? its the same principle. Weightlifter would have got a right telling off from my old boss if an airbag went when tipping 
Thats what the blooming things were designed for. And anyone who saw my old firm would tell you it was very tidy kit.
If the bags were gonna pop when tipping, then they’d likely be faulty. If they were gonna burst under that stress (which is pretty gently applied when you think about it) they’d all go at once if you hit a bump in the road at speed. Think you’ll find they’re easily tough enough to cope.
I don’t suppose there is any chance of buying a hi-vis jacket like the one in Krankee’s posts - would just love to wear that when wandering around the various drops I do
Thanks for the answers guys,
why is it then that new trailers such as Stas and the Dennison “sliding bogie” dump the air automatically when tipping 
Also guys talk about dropping abit of air out of the unit when you pull out from dropping the trailer to stop the airbags on the unit inflating too quickly and going pop when the weight of the trailer comes off (amongst other things). Is this not a similar situation as tipping a load off the bulk trailer
Jackets available HERE. £8.25
I don’t know about the trailers dumping that air automatically, but with the Unit, I thought that in these modern times the benefit of dumping the suspension when coming out from under a trailer is that it stops you getting grease all over the front of the trailer, which in turn ends up on your trousers and suzie’s. Rather than to protect the Airbags, as they must surely have an inbuilt safety valve to stop them from bursting through sudden inflation ■■
When dropping trailers, especially if they’re loaded, it’s best to dump the air out of the unit to avoid it springing up and the mudguards ripping off!! 
This tends to the case more for tag-axle units than midlift or 4-leg, btw…but it’s good practice just to do it as a matter of course. Drop any lift axles for the same reason. 
When you come out from under a trailer with the bags inflated, they don’t suddenly fill up some more, they just expand due to the weight coming off them. The unit will actually dump air out of them but not quickly enough to stop it rising up.
I have been driving an artic tipper for nearly 4 years and I have not yet had to dump my air when tipping and have never been told to, and the idiots I work for are pretty hot on that sort of thing as they like to save every penny they can. When I am running out on the road it is at 40ton but when internal on the port the lorry can be loaded up to 50 ton gross and I have never had a problem