Data Centers | Informative | Security Essential Design Standards for Perimeter Fencing in Secure Facilities Properly designed perimeter fencing is a critical first layer of physical security for data centers, critical infrastructure, and high-security sites. Construction & Materials Use 2.9mm steel wire with 50mm mesh chain link for durability and strength. Install fencing in a straight line at ground level, ensuring it is no more than 50mm above pavement, hard ground, or concrete to prevent breaches underneath. Height Specifications Fence should be 2.1 meters high when a top guard is included. For fences without top guards, height must be 2.4 meters. The top guard should increase height by 300mm, angled outward at 45° to deter climbing. Top Guard Requirements Should have three strands of double-twisted, four-point barbed wire, spaced 150mm apart. This deters intrusions and enhances the security profile of the perimeter. Fastening & Structural Integrity Use 2.3mm steel fastening ties or screw-type fasteners to secure chain link fabric to posts and rails. Signage Protocol Display clear security warning signage to mark restricted or limited access zones. Signs should be placed at 30-meter intervals, mounted at a height of 1.5 meters from the ground for visibility. Implementing these perimeter fencing standards enhances the physical security of mission-critical facilities. Durable materials, proper height configuration, secure fastenings, and visible signage all contribute to a robust barrier against unauthorized access.