I would observe that I think second guessing is a healthy part of any well controlled process and the goal of this framework is certainly not to restrict second guessing, rather itâs to improve judgment quality and thereby the acceptability and credibility of the judgment with those charged with second guessing them.
They can be flat root, fillet root, or major diameter fit. The purpose of this type of spline is to allow for angular misalignment between the shaft and mating detail. This is accomplished by crowning the male tooth. The tooth (usually) has a symmetrical crown about the centerline of the spline face-width.
Re: OSB ...slick side in/out &amp; up/down? OSB should be installed with the slick side inside on walls and roofs and fuzz up on floors. I use Weyehouser OSB which has lines at 16o.c. and 24 o.c. which saves a lot of time. One other thing to consider on all panels used in framing is that your building inspector should always be able to read the information printed on the panels.