SGH visually surveyed the exterior and parking lot, conducted water testing to identify leakage paths, and made observations of the parking deck assembly at exploratory openings. We identified widespread water leakage through the elastomeric coating applied to the concrete deck and corrosion of the metal deck and steel framing. SGH analyzed the structural capacity of the composite slab, including areas with deterioration caused by long-term leakage.
We designed repairs, including supplementing and repairing deteriorated structural components to restore the deck’s capacity, installing a fully reinforced vehicular traffic-bearing waterproofing system, and improving drainage. Highlights of our work include the following:
Identifying the sources and causes of the water leakage problems to enable the owner to make informed decisions on repair approaches
Evaluating drainage issues and developing cost-effective solutions to improve drainage
Developing design documents and specifications for the repair work, including mockup requirements and quality assurance testing to support the owner’s performance requirements
Providing construction phase services, including observing the structural deck and steel framing repairs and installation of the new vehicular traffic-bearing waterproofing system