Beautiful design. I love it. It looks like it would be very effective. Just out of curiosity, how are you getting around rules <S03> and <R04>? It looks as if your drawbridge ramp is outside the starting 28x38 foot print thus violating <S03> and it can let down between 0 and 8.5" from the floor violating <R04>. You might want to double check the discussion in
this thread.