How many passes of wacker plate?

[mattderby]

Hi
I am compacting a 150mm layer of MOT Type 1 for a residential driveway sub base (DIY project). The main site suggests:

Not suitable if under 1.8 T/m2
8 passes for a 1.8-2.1 T/m2 or
6 passes over 2.1 T/m2
However the wacker plate states 1200 daN, has a plate width of 400mm and weighs 70kg. How do I convert daN to T/m2 please?

Thanks
Matt

[Carberry]

Just go over it 8 times, once in every direction

[local patios and driveway]

+2

[DNgroundworks]

I just wack untill the wacker is bouncing nearly..then you know its at refusal, also find it compacts miles better if the MOT is damp.

[ken]

id wack 75mm of mot 10 times, then top up 75mm of mot too 150mm and wack it another 10 times.
only wack your 35-50 mm of grit sand twice.