State Transportation Building Garage

SGH worked on several projects at the parking structure since 2018. Highlights of our work include:

• Conducting safety inspections and implementing a prioritized make-safe approach
• Assessing the condition of the existing concrete structure and waterproofing through visual observations, hands-on surveys, and field and laboratory testing to identify areas of deterioration, distress, and leakage
• Performing field testing, including half-cell corrosion potential testing and making observations at exploratory openings to identify probability of corrosion activity at the elevated parking deck
• Estimating the chloride content in extracted samples in our laboratory
• Developing a rehabilitation program, including concrete and waterproofing repairs, and collaborating with a subconsultant to establish performance requirements for an impressed current cathodic protection (ICCP) system to reduce and control the rate of corrosion and extend the concrete structure’s useful life
• Coordinating with the owner, architectural design team, general contractor, and ICCP subconstultant to phase and execute the repairs and upgrades to limit disruption to the garage operations, which remained partially open throughout the project
• Providing construction administration services, including regularly visiting the site to observe the work, reviewing shop drawings and submittals, helping address field conditions, tracking repair quantities, reviewing payment applications and change orders, and attending weekly project meetings