Modified Axial Pullout Resistance Factors of Geostrip and Metal Strip Reinforcements in Sand Considering Transverse Pull Effects

The pullout resistance of reinforcement is an important parameter in the design reinforced retaining structures. At incipient failure, kinematics failure a structure shows that sliding mass soil pulls obliquely along slip surface. response to oblique pull can be considered made up equivalent axial and transverse components pull. Accordingly, tests were conducted on geostrip, metal strip (both smooth ribbed) reinforcements embedded uniform sand. Ribbed registered higher than geostrip reinforcements. modified factors accounting for ranged from 0.44 1.23, 1.4 3.5, 2.0 5.2 smooth-metal-strip, ribbed-metal-strip reinforcements, respectively. While 0.34 0.65, 0.75 1.1, 0.94 1.3.