In order to investigate the effect of applied force on slip behavior and resistance of high-strength bolted friction joints, tension and compression tests were carried out. The slip behavior is almost similar in both tests of joints with 3 rows of bolt and the slip resistance obtained by compression tests increased about 9% compared with the tension tests. From the compression tests with 3-12 rows of bolt, it is obtained that the slip resistance of joints with more than 6 rows of bolt didn’t decrease and kept to an average value of 0.59 for the slip coefficient.
