Specifications include, but are not limited to: 2-1 FUNCTION The physical security barrier provided by a security fence provides one or more of the following functions: • Gives notice of legal boundary of the outermost limits of the protected area. • Assists in controlling and screening authorized entries into secured/protected areas by channeling vehicles and personnel to access control points. • Supports surveillance, detection, assessment, and other security functions by providing a platform for installing intrusion detection equipment. • Deters casual intruders from penetrating a secured/protected area by presenting a barrier that requires an overt action to enter. • Causes a delay to obtain access to a installation/facility, thereby increasing the probability of detection. 2-2 CHAIN LINK FENCING Chain link fence is a fencing material made from wire helically wound and interwoven in such a manner as to provide a continuous mesh without knots or ties. See Figure 2-1 below for standard chain link fence details identifying all of the components. Chain link fences and gates must comply with specification requirements in UFGS 32 31 13, Chain Link Fences and Gates and UFGS 32 31 13.53, High-Security Chain Link Fences and Gates. Consult with ASTM F2611 and ASTM F1712 for additional guidance (fabric, post, framework, fittings, and other accessories) regarding chain link fencing. Refer also to the Chain Link Manufacturers Institute’s Security Fencing Recommendations (CLF-SFR0111) and Product Manual (CLF0PM0610) for additional information. 2-2.1 Chain Link Fencing Fabric Fencing fabric must be minimum 9-gage wire mesh and mesh openings must be not be greater than 2-inches (51 mm) per side. Fence fabric material will be galvanized steel, PVC coated steel fabric (use PVC coated if located in corrosive environment or where aesthetics are of prime importance), or aluminum coated steel fabric (use aluminum coated if located in corrosive environment). See Corrosion Prevention Control for additional information regarding material selection.
