The inflatable roof over the Hubert H. Humphrey Metrodome in Minneapolis, Minnesota was made from ten (10) acres of fabric, weighing approximately 580,000 pounds. Its dual layer construction consisted of a Teflon-coated fiberglass outer layer and an inner layer of acoustical material. During winter months, warm air circulated between the layers to help melt snow on the roof. Continuously monitoring weather, a sophisticated environmental control system managed the temperature and air flow in the roof. However, on December 10, 2010, a severe winter storm dropped over 17 inches of snow on the Metrodome, causing three roof panels to tear and resulting in a catastrophic collapse of the roof.
Pinnacle was a first responder after the collapse and emerged as a principal critical services provider during the removal of the collapsed roof and installation of a new roof. Elements of Pinnacle's Metrodome solutions strategy included:
- Performing a hazard analysis and resulting plan to mitigate potential safety/ health exposures.
- Creating a site-specific Health and Safety Plan, including documentation processes.
- Providing on-site personnel to serve in the critical roles of Site Safety Officer and Assistants.
- Credentialing and documentation of all on-site responders.
- Coordinating consultations with emergency management personnel.
- Conducting daily safety briefings and liaising with Minnesota OSHA.
- Maintaining records of all on-site contractors and equipment.
- Providing incident reporting on safety and response activities.
- Providing continuous plan and scene monitoring with necessary critique, assuring continuous improvement throughout the project.