ABSTRACT
Two types of EEP can be found: parallel and tapered (Musikant & Deutsch 1984). According to the recommendations from a number of investigators, a parallel post is better than a tapered post (Standlee et al. 1978, Felton et al. 1991, Johnson & Sakamura 1978, Standlee et al. 1978, Qualtrough et al. 2003). Thus, a parallel post will be considered in this investigation.
