16 Tank Assessment

WHB Engineers operating company, conducted a seismic assessment for the City of Redlands. The City of Redlands selected Brady to complete a seismic assessment of eighteen (18) of the City’s potable water storage reservoirs, seven (7) pump stations, and two (2) transmission mains for the Water Division.

The work involved a study of existing interior and exterior conditions, a seismic code assessment, recommended improvements, a hydraulic analysis of the entire system with an eye on reservoir consolidation opportunities, and a budget level cost.

WHB Engineers performed structural analyses on concrete, steel, and prestressed reservoirs. The City of Redland lies between the San Andreas and San Jacinto faults. All analyses were conducted with site-specific seismic reports and considered the current and anticipated forthcoming (ASCE 7-22) requirements of the seismic code. 

WHB Engineers provided recommendations of reservoir replacements and upgrades. To save considerable time and expense for the City, each reservoir was studied using WHB Engineers underwater drone. Interior roof inspections were completed via an inflatable boat. WHB Engineers provided confined space entry support with WHB Engineers staff. 

The project included the assessment of pipe transmission mains critical to the treatment plant influent. These critical pipelines were observed to have structural and seismic vulnerabilities. Recommendations were made to assure that safe, reliable water can be supplied to the City’s water treatment plants.