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.
To avoid undermining the foundation, however, most codes require that the tile be placed outside a 60-degree angle from the footing. Drain tile can also be placed on top of the footing. The advantage here is that the tile will be as level as the footing â a good strategy when using flexible pipe (Figure 7).