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Thread: One Rincon Hill - Earthquake Technology

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    Default One Rincon Hill - Earthquake Technology

    The structural engineer for One Rincon Hill’s two residential towers (top left) relied on a performance-based approach for seismic design.
    Site plan and rendering courtesy Solomon Cordwell Buenz


    One Rincon Hill is the first project in the country to use BRBs (bottom diagram and
    photo) as outriggers. It has no perimeter moment frame, as is standard for buildings taller than 240 feet designed with a prescriptive approach. Flying forms (bottom) kept floors free of shoring and helped achieve a West Coast speed record for high-rise concrete work.
    Photo courtesy Webcor (bottom); diagrams: MKA Associates (top two)


    Rebar in the core of a PSD building is typically more dense than that of a prescriptive tower, especially at the base. Two sets of BRB outriggers span from levels 26 to 32 and 51 to 55, and tie the core to full-tower-height outrigger columns. Each system of eight BRBs consists of two pairs of diagonals that form mirror-image Ks.
    Photo courtesy Webcor (bottom); diagrams: MKA Associates (top two)


    One Rincon Hill is the first project in the country to use BRBs (bottom diagram and photo) as outriggers. The structural efficiencies realized through the PSD process saved money and allowed more to be invested in architecturally important components, such as the unitized curtain wall that cloaks nearly all of the building, including the rooftop mechanical space (top).
    Photo courtesy MKA Associates (top); Bovis Lend Lease (bottom); diagram: MKA Associates


    One Rincon Hill is the first U.S. residential tower to have a tuned liquid mass damper to help reduce sway to acceptable comfort levels.
    Image courtesy MKA Associates




    Full article here (copyright McGraw Hill Construction): http://continuingeducation.construct...?L=5&C=415&P=1

    Videos: http://www.youtube.com/watch?v=VxzWqU2cTiY
    http://www.youtube.com/watch?v=dOYOG...eature=related
    Last edited by Tectonic; June 22nd, 2008 at 08:26 AM.

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