For Ex's 3.5 tonnes and less we use one pin per ramp. For Ex's 4 tonnes and over we use two pins per ramp......
for Excavators between 3.5 and 4 tonnes ...well ....we don't have one
Anyway, the back of the dump bed is channel or RHS. The pin is drilled right through from top to bottom and a 11/16 lynch pin is shot through the ends of the pins so they wont come out. No regs for chains.
The excavator is not lashed in the dump bed. From what I have gathered on this forum; It would appear we have similar binding guidelines for equipment on flat decks to what most of you guys talk about. I have not been able to find anything specific in our regs about machines inside the dump body. You could safely assume that the same guidlines would apply (I expect) but over 40 to 50 operators in my area I know of none that secure a skid or a mini inside the dump bed. I don't know wether this is a grey area....there is some other regs or whatever but I have been pulled over by the heavies with the skid in the back of the 9 tonner and nothing has ever been said. A trip down the freeway in the morning will pass at least a dozen skids in six wheelers with not one of them chained.
That all said and having been operating that way for years I'm thinking of fitting two D rings in the dump body and putting two binders X to the back of the machine with the blade against the head board. Ultimatley the regs and the actual legislation state that it is the drivers responsibility to ensure a load is properly secured.