4#恭喜发财 $ w$ Z% D: M2 n( r- a0 r $ a- A# I3 e8 t' v8 _3 _/ B" nVery detailed explanation; learned something new everyday. As you said, truss connector is an essential component in framing, so why is it optional and still got a pass in city inspection; is there anything in the building codes that say about this?