Method for testing the minimum pullout strength of a ground anchor (D#73, 790-C1-D2)

摘要

A method for testing the minimum pullout strength of a ground anchor for an oil well derrick or other towers (as an antenna, guy line, or the like) comprises (1) connecting a housing means to the ground anchor, (2) positioning an elongated means deep in the housing means, (3) inserting a shear pin of a predetermined shear strength through the housing means and the elongated means, and (4) connecting a load applying means to the elongated means for applying the predetermined shear force to the shear pin, so that while applying an increasing load to the elongated means if the anchor does not move prior to exceeding the predetermined tension as indicated by breaking of the shear pin, a safe, satisfactory, and reliable anchor is indicated.