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    الأحد، 7 أغسطس، 2016

    Earthquake Protection of Building Equipment and Systems


    Earthquake Protection of Building Equipment and Systems


    The basis for this book is that nonstructural systems are no longer treated by the building

    code as black-box components. Postearthquake active operation is required for designated

    seismic systems. This functionality mandate cannot be satisfied with simple anchorage

    calculations. A fundamental shift in code philosophy requires new perspectives from

    the stakeholders involved in nonstructural earthquake protection. Implementation of protective
    measures is a critical risk mitigation issue. The supplier can no longer ignore seismic
    requirements, and the building professional can no longer treat nonstructural items
    as black-box components.

    Nonstructural systems are often referred to as secondary systems, with the primary
    system being the building structure. While the label "secondary" is appropriate in this
    context, nonstructural systems are far from secondary in importance. The value of nonstructural
    systems expressed as a percentage of the total cost of a building, excluding the
    price of the land, has dramatically increased over the past several decades. In acute healthcare
    facilities and high-value industrial buildings, nonstructural systems can easily comprise
    85% or more of the total cost (Charleson 2008). Protecting this investment from earthquake
    damage is a reasonable goal and is likely a high priority for the building owner.


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