It's been like this since I've uploaded the image. I was thinking of resubmiting the image but decided against it since I havn't had time to work out the rules yet.
Other than normal time restraints, the battering ram issue opens up a whole set of possibilities (ladders, siege towers, siege engines, etc...) that need figuring out before proposing something worthy of submiting. In the end, I may have posted this image a bit too prematurely since it is only half of the projet .
Once I have further developed this projetct, I'll pick up from here.