How Should Armored Car Facilities Be Engineered for Safety?

An armored car facility is a secure vehicle operation: the engineering eliminates vulnerable moments in moving vehicles, crews, and cash between the street and the vault. The site is designed for security — controlled entry, sally-port garage with interlocked doors, no straight approaches, clear sight lines. The building hardens the crew and transfer areas with rated construction. The MEP supports 24-hour operations with garage ventilation, dedicated power and environmental control for cash areas, and integrated lighting and camera coverage. The key insight is that the site plan is the first security system. A well-engineered building on a poorly planned site still has its vulnerability at the gate. The civil, structural, and security design have to be developed together, from the property line inward.

Vehicle circulation and the transfer sequence are the heart of the design. The engineer maps every movement — truck arrival, entry through the sally port, crew dismount, cargo transfer, truck dispatch — and designs each step so the security boundary is never open. That means interlocked doors and gates, mantraps for personnel moving between the garage and the cash areas, and a layout where the natural path is also the secure path. When the secure path fights the efficient path, people prop doors open, and the engineering has failed regardless of what the drawings say. The garage environment is the MEP signature. Enclosed vehicle bays with armored trucks running need exhaust ventilation designed for the actual vehicle mix and operating cycle, plus heating or cooling for crew comfort during loading. The structural slab carries vehicles weighing several times a normal truck, and the sally port doors — large, heavy, interlocked — need structural supports and power designed for their size and duty cycle.

Armored facility projects are security projects that happen to include a building, so the security concept has to lead. The institution's threat assessment and operating procedures determine the site layout, the garage configuration, and the hardening levels — engineering those without the security concept is guessing. Get the security requirements in writing before the site plan is drawn. The checklist:

• Get the institution's threat assessment and operating procedures before site planning
• Design the sally port and transfer sequence so the secure path is the natural path
• Engineer the site geometry for security — approaches, sight lines, standoff — from the start
• Design the garage slab and structure for armored vehicle weights and sally port door loads
• Provide garage ventilation for the actual vehicle mix plus integrated lighting and camera coverage