CLIENT
City of St. Louis Water Division
St. Louis, MO
FACILITY
The Distributive Pumping Station at the Chain of Rocks Water Treatment Plant is a one-story steel frame with infill masonry structure that was placed in service in 1961. The plant provides a major portion of the daily water supply to the City of St. Louis. The Distributive Pumping Station houses the 10 high service pumps that are critical for pumping water into the network.
CHALLENGE
The structure was designed and constructed prior to the adoption of seismic requirements in the local building code. Major seismic vulnerabilities were identified in the building and its components that could result in significant service outages and tremendous economic impact to the region for even a moderate level earthquake.
SCOPE OF SERVICE
Complete a seismic vulnerability assessment for the structure and nonstructural components
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Develop preliminary seismic strengthening schemes for the structure and vulnerable components
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Provide a cost estimate for implementing proposed seismic strengthening measures
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Develop the seismic fragility curves for the existing and retrofit condition
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Conduct a Benefit-Cost analysis
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Complete the FEMA Pre-Disaster Mitigation Grant application
OUTCOMES
CCS Group in conjunction with Goettel & Associates and ERM Technologies, Inc performed a review of the building and nonstructural components to determine major seismic vulnerabilities.
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A benefit-cost analysis was performed to determine the highly cost-effectiveness of implementing a seismic retrofit of the building based on reducing the economic impact of service outages to the community.
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A FEMA PDM Grant application was prepared with the Water Division and submitted to the Missouri State Emergency Management Agency (SEMA) for approval.
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