Actually The tie beam, as drawn in the book is not actually a free span, but could very well have two or more posts supporting the beam. It was my assumption from reading other books, that as long as the scarf was over a support i.e., post then a scarf would be acceptable. An example would be the beam that ties the two high posts in a high beam cape.
Am I describing this correctly? I hope so.
I guess the question would be? where can you use a scarf? Sills obviously, Plates I assume, Ridge beams, Where else?
