LAWRENCE LIVERMORE NATIONAL LABORATORY, BUILDING 836 DESIGN BUILD GATES

  • Client: Lawrence Livermore National Laboratory
  • Location: Livermore, CA
  • Date: 2017
  • Contract #: B625032
  • Value: $219,827.00

This project was a design build of a two-stage, 10-foot high security/safety fencing and gates system to secure the Building 836 complex. The owner requested that the existing manually operated gate that provided access to B836 be replaced with an automatic rolling gate meeting the owner’s security requirements. The outer safety gate was upgraded with a gate that met the owner’s fencing safety standards. The safety fencing that connected the safety fence loop with the security fence loop was replaced. New fence posts were installed at the inner gate, with fencing aligned with the rolling gate track. A new motorized rolling gate was installed. Two safety loops were embedded within the asphalt paving, one inside and one outside the gate. A concrete pad for the gate motor and future owner equipment was formed and poured adjacent to the rolling gate. The existing asphalt driveway was trenched to accommodate conduit between the new housekeeping pad and the building to provide emergency power to the inner gate motor from the building’s emergency power panel. The trench was backfilled with slurry and finished with asphalt paving. The existing pedestrian gates on both the security and safety fence line were replaced with new crash gates