Perimeter Security Post & Beam Fence
Anti-ram fencing protects high-risk facilities from vehicle-borne attacks by providing complete perimeter security. These barrier systems deliver maximum protection for buildings, equipment, and hazardous materials—especially those vulnerable to high-speed impacts or located near roadways. The XL-501 Post and Beam Anti-Ram Fence is a proven security solution that combines vehicle-stopping power with an innovative design, offering reduced costs, easier installation, and enhanced aesthetics.
Total Protection
Comprehensive perimeter security that stops vehicle threats while maintaining an aesthetically pleasing appearance.
Quick Installation
Innovative post and beam design allows for rapid deployment and easy integration with existing security measures.
Smart Upgrades
Cost-effective solution to enhance current fencing systems without compromising facility operations or visual appeal.
Design Features
- Simple, efficient design using minimal components – only requires nuts/bolts, posts, top cap, and rebar sticks
- Patented energy-absorbing technology allows posts to be set 30 feet apart, eliminating need for multiple intermediate posts and cables
- Flexible installation accommodates various site layouts and terrain changes without requiring special modifications
- Durable construction with heavy-duty galvanized steel and optional protective coatings for long-term weather resistance
- No initial or ongoing tensioning required due to high-strength tubular beam design
Product Specifications and Advantages
Standard Features
- Crash tested to ASTM F2656-07 test method and assigned a rating of M50-P1 (15,000-pound vehicle traveling 50 mph with less than 1 meter penetration)
- Post spacing – 30’ (9.14 m)
- Beam height – 38.5” (978 mm)
- Post height – 42.63” (1083 mm)
- Foundation – 36” (914 mm) diameter x 78” (1981 mm) deep
- Constructed from heavy-duty structural steel sections with patented “Smart Steel” energy-absorbing technology
- Top cap secures beam and protects system from the elements. Secured with a single nut and bolt
- Rebar, provided by Ross, is installed directly into posts. Separate rebar cages are not required
- Hot-dip galvanized per ASTM A123
Technical Data
Our Post and Beam Anti-Ram Fence features a single, clear-span tubular beam with vertical posts placed 30 feet apart. This design reduces material and installation costs by eliminating intermediate posts, foundations, and multiple wire rope runs. Installation is quick and simple—the horizontal beams can be set using standard equipment like backhoes, digger derrick trucks, excavators, skid loaders, or boom trucks.
The simplified post hardware requires only one nut and bolt with shim plates. The post foundations, 36 inches wide by 78 inches deep, are engineered for cost efficiency. Since Ross integrates and supplies the rebar directly with the posts, contractors save time and money by avoiding separate rebar cage construction for foundations.
Quality Control
- Applicable Standards
- ASTM A36: Steel Shapes
- ASTM A500: Steel Tubing
- ASTM A615: Steel Reinforcing Bar
- ASTM A307: Carbon Steel Bolts
- ASTM A563: Carbon Steel Nuts
- Structural welding per AWS D1.1/D1.1M
- Testing and Certifications
- ASTM F2656-07 “Standard Test Method for Crash Testing of Vehicle Security Barriers”; M50-P1 rating
- Listed on DOD Anti-Ram Vehicle Barrier List
Installation
Installation requires excavation of holes using an auger and placement of posts in concrete (3000 psi [20.7 Mpa] min, 28-day strength). Rebar, which is provided by Ross, is installed directly into the fence posts, eliminating separate rebar cages. The horizontal beams can be set with a backhoe, digger derrick truck, excavator, skid loader, or boom truck. A single nut and bolt, which can be peened or welded for additional security, fasten the top cap to the post. For information on corner conditions, significant changes in elevation, and non-standard beam lengths, contact us for details.
Maintenance
The XL-501 Post and Beam Anti-Ram Fence is maintenance-free, constructed with high-strength materials that do not require tensioning, and comes in high-quality, durable finishes that withstand the elements.
Design Options
Optional Features Include:
- Post filler plates for end-of-run conditions
- Custom beam lengths
- Custom end conditions
- Galvanized + epoxy primer and polyurethane topcoat.
Post Filler Plate
Typical Applications
Unlike traditional chain link and ornamental fences, which offer no vehicle protection, or highway cable barriers that only handle glancing impacts, the XL-501 provides crash-tested protection against head-on vehicle impacts perpendicular to the fence line.
The Ross XL-501 offers robust anti-ram protection for high-risk facilities like data centers, refineries, chemical plants, utility stations, military bases, and airports. It can be installed as a standalone system or combined with existing anti-pedestrian fencing.
Ross Technology has built thousands of durable vehicle barrier systems, serving major government agencies, contractors, integrators, and global corporations. Our products can be found in numerous applications including:
- Banking/Financial
- Chemical/Pharmaceutical
- Commercial
- Critical Infrastructure
- Data Centers
- Government
- Industrial
- Institutional
- Mass Transportation
- Military
- Shipping: Ground, Sea, Air
- Stadiums and Arenas
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