Well did some modelling this morning for the Type C revetment, working on an internal dimension of 110’ (33m), a total length of 86’ (26m) and a barrel diameter of 0.66m for the wall thickness and a height of 14’ (which I I reduced this to the for barrel height of 3.96m) here is what you get, a hell of a lot of barrels (some 480 odd which to me seem a lot) and far too many polys.
So I think it would be fair to say that in its current state the model would be far too heavy on the poly count as it is, if only the straight walls were made of barrels and the rest rammed earth, rock or sand bags then maybe the count could be low enough, but with only the one crude reference to go by I’m not confident enough of the overall construction to even go with what I’ve done.
Also maybe some shorter revetments based on the one that I have already modeled may be useful for this sandbag example below.
