A recent inquiry revealed that the literature on this site and vulcanhammer.info has a difference of design procedure for anchored sheet pile walls.
In order for a deadman anchor to be effective, it must be beyond the failure envelope. Here we present two ways to insure that this is so.
The first is shown above: it is taken from NAVFAC DM 7.2, although it has been in many publications over the years, including NAVFAC DM 7.02 and Sheet Pile Design by Pile Buck. It shows the point at which the failure envelope starts as the “estimated point of zero moment in wall.” That can be determined using software such as SPW 911.
The second is shown below, from EM 1110-2-2504, and shows the same point at the bottom of the wall.
If you have any comments about either of these methods, or which one you prefer and why, let us know in the comments.
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