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Whitewood–limecrete joints of supplementary stud-slip angles, Page 1 of 2

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This paper describes longitudinal shear tests on limecrete slabs connected to whitewood glulam joists by means of inclined iroko studs fastened to the joists by transverse ramin dowels. Seven single-stud joints of stud-slip angles arranged in supplementary pairs of 45 and 135°, 60 and 120°, 75 and 105°, and 90° were tested to failure. For any given stud-slip angle the test data show consistency in shear capacity, but variation in working slip stiffness. Joint shear capacity changed dramatically (46·7 kN at 75° to 12·5 kN at 105°) in proceeding from acute to obtuse stud-slip angles, but varied modestly within each of the acute and obtuse regimes. Joints with two studs at 45° and 135° stud-slip angles in V and Λ layouts were also tested, giving force-slip plots (including ductility) that match the superposition of plots from the constituent single-stud joints. After testing, the joints of acute stud-slip angles exhibited residual features including narrowing and flexing of the stud's shank near the slab-joist interface, slip of the stud within the joist with associated double shearing of the dowel, and shearing of the stud's head overhang off the shank. For obtuse stud-slip angles, pronounced residual flexing of the stud in the slab was noted.