B&B ARMR’s Crash Beam Barriers Gates are engineered and designed to protect at-risk access points and prevent forced vehicle entry or exit for industrial, commercial and institutional facilities requiring medium to high security. Available in manual, hydraulic or electromechanical operating modes, the crash beam barrier gates are ideally suited and for oil refineries, chemical plants, train yards, storage facilities, technical centers, nuclear facilities, embassies, military installations and government agencies.
B&B ARMR’s crash beam models have a minimum gate opening of 12 feet (3.7 m) and a maximum of 28 feet (8.5 m). The units are capable of immobilizing a 10,000 lb. (4,535.9 kg) vehicle traveling 18 mph (29.0 km/h) to 20 mph (32.2 km/h) with a penetration depth ranging from 18 to 20 feet (5.5 to 6.1 m). Basic components of the crash beam barriers include the standard vertical to horizontal arm with an energy absorption cable assembly, hinge post, receiver/latch post, cable-reinforced crash beam and automatic controls.
With a gate arm made of 4-inch 6061-T6 aluminum pipe lined with a 7/8-inch annealed, stainless steel wire rope, B&B ARMR’s crash barriers have been successfully crash tested for energy absorption capacity per U.S. Navy Specifications and Department of the Army rating level of KN1-LN2. Models CR-25 and CR-25M are listed by the U.S. Army Corps of Engineers in the document, Protection Against Malevolent Use of Vehicles at Nuclear Power Plants (NUREG/CR-6190 Vol. 2, Rev. 1).
When the crash beam is hit by a vehicle, the aluminum beam gives way to the cable inside, and the impact energy is absorbed as the cable stretches. When the cable is at full tension, the impact energy is then transferred to the foundation through the hinge post and the receiver/latch post of the crash beam.
B&B ARMR’s Crash Beam Barriers are available with several enhancement options to easily adapt to suit any user’s needs. For extremely cold weather, the receiver/latch post may be equipped with a heater for uninterruptible operation or an electromagnetic lock can be installed for additional security during unattended times. Manual unit, Model 714, may be raised and lowered by one person without the use of counter weights, and Model 712-P is a portable vehicle barrier designed for fast installation in areas where a permanent barrier in not available.