A ductile seismic shear key construction including a concrete support, a concrete shear key supported on the concrete support, a generally vertical reinforcement bar in and extending between the concrete support and the concrete shear key and anchored in the concrete support, and an isolation key. The isolation key is in and at the base of the concrete support and adjacent the reinforcement bar. The bar can be one of the two legs of a downwardly-disposed U-shaped bar. The other leg, if present, is also in and extends between the concrete support and the shear key and is anchored in the concrete support; and a second isolation key is in the concrete support at the base thereof and adjacent the second leg. The bars can pass through through-holes in the isolation keys, particularly for an interior shear key construction. For an exterior shear key construction the bars can be disposed in notches of the isolation key. Horizontal reinforcement bars can be placed perpendicular to the vertical bars (legs) and directly above the isolation key(s) and secured to the vertical bars.
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Techno Adagio Strings
Combine Classical Tunes with Trance Majid Sarraf
Category:
Music
Uploaded:
24 Oct, 2009
Duration:
6m 33s
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Category:
Music
Uploaded:
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Duration:
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Category:
Music
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