Transportation: DimWeight rating

Hi List,

Has anyone had any success in using Dim. Weight Rating ? In spite of the document ODS-01-0102 (by KG), I'm facing some difficulties to setup this kind of rate.
An example:
(DMW: 166 Kg per cubic size)
Shipment Volume=0,55 cubic meters
Shipment Weight=48 kg.
Dim Weight=91,30 kg (i.e. 166*0,55)
So the charged rate is applied per 91,30 kg.

Otherwise:
if Shipment Volume is 0,27 cubic meters and
the Shipment Weight is 48 kg.
then Dim Weight is 44,82 kg (i.e. 166*0,27)
So the charged rate is applied per 48,00 kg.

Anybody can help me?

Thanks
Gianni