I am New to this, I am looking to Build My Home. You could call it a tall post cape with a side porch or i have seen it called a Broken back Salt box, I also want to put a Shed roof dormer on the porch side. I have four Bents With Four Post looking to use a Common rafter roof system with Eave plates and midspan plates. My problem is sizing the Rafters, Plates, And Posts. I am using a 12/12 Roof, so this puts my 2 center post @ 22' Form floor to bottom of the Rafter, Not knowing the size of the midspan plate. The longest Span i have Form center to center is 13'. My other problem is do i need a Ridge Beam, What is the best and easiest Joinery For this GREEN HORN. Thank you For you time and i hope this is not to much for you. I have attached a few web pages to show you what i am looking to build, i also Have it sketched in CAD if you have CAD.
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http://www.shelterinstitute.com/timbergallery/centerhall/index.htm ,
http://classicbarnhomes.com/plans/homestead1a.pdf
