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SR99 Bored Tunnel-Assessment of Settlement Impacts ... - SCATnow

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Figure E-1. Monitoring/Alert Mechanism SchematicIt is essential to have internet connections at all locations where data need to bemeasured and analyzed frequently and where alarms are required. Various wirelessnetwork solutions are available, but fixed wired internet access provided by thebuilding owners or internet access (DSL or cable) ordered for the locations areusually much more reliable. The cost <strong>of</strong> the A/D converters is relatively low, andthey can have data logging capability for stand-alone locations without internetaccess; however, such a system compromises access and no alarms are possible.Where building owners can provide internet access to the basement, connecting thesensors is easy. However, it is essential that no firewalls are blocking the portsneeded by the data acquisition. Otherwise, a DSL can be ordered for a building.The Alaskan Way Viaduct & Seawall Replacement Program March 2010Proposed SR 99 <strong>Bored</strong> <strong>Tunnel</strong> - <strong>Assessment</strong> <strong>of</strong> <strong>Settlement</strong> <strong>Impacts</strong> to Buildings E-12Public Disclosure Request 11-0123 for Elizabeth Campbell - 2nd installment

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