Perimeter systems need to be secure yet unobtrusive, often incorporating landscape design features.
Hinman designs attractive and effective perimeter systems to resist vehicle impact. We provide perimeter protection recommendations for applications from deterrence measures, using Crime Prevention Through Environmental Design (CPTED) concepts, to physical barriers capable of stopping 15,000 pound vehicles traveling 50 mph.
Most rated systems are designed to meet a Department of State 15,000 lb. vehicle threat, which can be excessive for federal or private buildings with lower threats. When we determine this is the case, we design proprietary systems that result in considerable cost savings.
Hinman looks for early design opportunities to minimize perimeter penetration by placing vulnerable vehicle access points away from high velocity impact zones. Vehicle trajectory analyses help us evaluate highest achievable velocities for defined credible threats along secured perimeters, often reducing barrier system costs and specifications.
We employ both simple and advanced tools for barrier design. One simplified analysis tool we use is the Barrier Impact Response Model (BIRM), developed by the US Army Corps of Engineers to analyze the behavior of a vehicle striking a deformable barrier. Where it is important to capture the effect of soil-structure interaction, we’ll use an advanced finite element analysis such as LS-DYNA.
Perimeter security consulting services include: specification preparation, qualified manufacturer recommendations, ramming threat definition, detailed design of custom solutions, access control point recommendations, foundation analysis for barriers, testing of barrier system and review of testing reports.