Hello everybody! So I have a rookie question to ask that's causing me a great deal of confusion. I was taught to do layout for walls and roofs by hooking tape at end of plate, pull 16s (or whatever OC called for) and deduct 3/4. So 15 1/4 x to the right, 31 1/4 x to the right, etc, etc. I'm currently working with two guys who do it differently when we do roof trusses. They hook their tape at the end of plate and mark 24 and x to the right of the 24 mark and so on, rather than deducting width of truss. I don't do layout because of my skill level, but I'd like to know why they do it differently then the way I learned. Btw, I'm just going of what I read in the dewalt carpentry and framing book. That's where I read about layout. Could somebody clear this up for me? Are roofs layed out differently? Are trusses layed out differently? Thanks in advance.