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.
For fixed ladders consisting of wood side rails and wood rungs or cleats, used at a pitch in the range 75 degrees to 90 degrees, and intended for use by no more than one person per section, single ladders as described in 1910.25(c)(3)(ii) are acceptable.