Terra-Petra was recently awarded the contract to perform inspections at the Maple Street Correctional Facility site in Redwood City, California. The Northern California site requires excavation below the water table and is located within a region impacted by naturally occurring methane gas. As such, the future building is susceptible to the impacts of methane gas and water intrusion and requires a dual methane barrier/waterproofing system. Gergen Construction is in the process of installing the system which will consist of a membrane and passive venting system to adequately protect the building.
The inspections will be administered through Terra-Petra’s San Francisco office. Terra-Petra’s Deputy Methane Barrier Inspectors (DMBI) come prepared with diverse certifications and extensive knowledge of prevalent systems, making Terra-Petra a versatile choice for any methane/water impacted construction project. The Maple Street Correctional Facility site is no exception. For this project, Terra-Petra’s certified Hydroshield, Coreflex and Liquid Boot inspectors led to the selection of Terra-Petra as the best team to get the job done.The joint effort and long-standing relationship between Terra-Petra and Gergen Construction will ensure an efficient and reliable system to provide the project owners with an environmentally safe building.
Newly constructed grade beams at the Maple Street Correctional Facility during the beginning phases of construction.
Pre-foundation grading and excavating at the project site in Redwood City.
Steel and wood formwork of the future correctional facility beginning to shape before installation of the methane/waterproofing system.