hi guys, I'm going wfp soon with van. looking to buy Renault traffic (transit size). Is this big enough to hold a ibc tank? Using such a large tank as the are two of us working. doing 8 hr days.
No. Don't do it. The maximum payload on a Trafic/Vivaro/Primastar is about 1200kg (with the 2.9 tonne version). Most of them are 2.7 tonne so only have about 1,000kg payload. The tank, 1,000 litres of water, and two guys would probably eat up nearly all the payload on a 2.9 tonner and would certainly exceed it on a 2.7 tonner. To give you some sort of guide, I carry two largish poles, a trolley, an 800 litre tank, two hosereels, and the usual miscellaneous stuff for WFP (including a spare battery). I have checked it out at a weighbridge before. If I have the 50 litre trolley full, I can't have a full water tank too. I admit that I'm overweight but certainly not the weight of two guys

. Bear in mind that I have the 2.9 tonne version and I work alone. The weight test was done with the diesel tank fairly full too.
I assume you are aware that 1,000 litres of water weighs exactly 1 tonne (1,000kg)?
You would need to baffle an IBC tank if van mounted. This would probably slightly reduce the amount of water being carried. If you do decide to fit this tank, I suggest that you put everything in it that you will normally carry, fill up the diesel tank, sit both yourself and your workmate in the van, then get it weighed. The number of kilos left of spare weight is the number of litres of water you can carry (though perhaps you should allow a margin for error and allow for being in the van AFTER you've eaten your lunch
