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.
However, there are acouple of things to remember. When the plumb (heel)cut and level (seat) cut lines are laid out for abirdâs-mouth on a hip rafter, set the body of the squareat 17 inches and the tongue to the unit of rise (forexample, 8 inches-depending on the roof pitch)(fig. 2-34, view A).