The elbow is considered a third class lever because

if you are asking how much they can go over the 1500 limit it would be safetly within the 2310 and 2600.mg

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there