Freestanding Hollow-Core Blocks
Regularly used Redi-Rock blocks for freestanding wall applications.
Freestanding Hollow-Core
Corner Hollow-Core
Half Hollow-Core
Half Corner Hollow-Core
"It’s [Freestanding Hollow-Core] a specialized product that solves a real problem. There's nothing an installer could do comparably if a customer needs a barrier or median wall."
–Jeff McKay Schreiter Concrete (Wright City, Missouri)
Get To Know Freestanding Hollow-Core
Easily integrate TL-4 barriers, fencing systems, and railings without extensive core drilling or field modifications.
Hollow-core design accommodates reinforcing steel and concrete, creating a monolithic structure for demanding applications.
Ideal for flood protection walls, force protection barriers, median walls, and grade separation projects.
Ready for the Toughest Challenges
Freestanding Hollow-Core Blocks step in when standard freestanding walls or parapets simply aren't enough. The innovative hollow-core cavity allows reinforcing steel and concrete to be placed directly within the units, creating a reinforced structure capable of withstanding impact loads, flood protection requirements, and other challenging conditions.
Whether you're designing a traffic barrier, flood wall, or protective screening system, Freestanding Hollow-Core Blocks deliver the structural performance required while offering the highly textured natural stone appearance that defines the Redi-Rock system.
Maximize Space Without Sacrificing Performance
When space is limited, every inch matters. Freestanding Hollow-Core Blocks help engineers and contractors create integrated barrier systems directly above retaining walls, eliminating the need for separate structures that consume valuable real estate.
The result is a cleaner design, a smaller footprint, and a more efficient use of available space without sacrificing safety, structural performance, or long-term durability.
Hollow-Core Freestanding Block Specifications
Freestanding Hollow-Core Cobblestone/Limestone Specs Block Weight: 910 lb (410 kg) Block Volume: 6.38 ft³ (0.181 m³) Infill Volume: 4.09 ft³ (0.116 m³)
Kingstone/Ledgestone Specs Block Weight: 770 lb (350 kg) Block Volume: 5.38 ft³ (0.152 m³) Infill Volume: 4.09 ft³ (0.116 m³)
Corner Hollow-Core Cobblestone/Limestone Specs Block Weight: 1000 lb (460 kg) Block Volume: 7.01 ft³ (0.198 m³) Infill Volume: 3.37 ft³ (0.095 m³)
Kingstone/Ledgestone Specs Block Weight: 970 lb (440 kg) Block Volume: 6.80 ft³ (0.192 m³) Infill Volume: 3.37 ft³ (0.095 m³)
Half Hollow-Core Cobblestone/Limestone Specs Block Weight: 460 lb (210 kg) Block Volume: 3.19 ft³ (0.090 m³) Infill Volume: 2.04 ft³ (0.058 m³)
Kingstone/Ledgestone Specs Block Weight: 390 lb (180 kg) Block Volume: 2.69 ft³ (0.076 m³) Infill Volume: 2.04 ft³ (0.058 m³)
Half Corner Hollow-Core Cobblestone/Limestone Specs Block Weight: 550 lb (250 kg) Block Volume: 3.81 ft³ (0.108 m³) Infill Volume: 1.31 ft³ (0.037 m³)
Kingstone/Ledgestone Specs Block Weight: 510 lb (230 kg) Block Volume: 3.53 ft³ (0.100 m³) Infill Volume: 1.31 ft³ (0.037 m³)
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Freestanding Hollow-Core Block FAQs
Can Freestanding Hollow-Core Blocks be used with Redi-Rock retaining walls?
Absolutely. Freestanding Hollow-Core Blocks are frequently installed above Redi-Rock retaining walls to create integrated barrier systems, fencing supports, and protective structures while maintaining a cohesive appearance across retaining wall projects.
How do Freestanding Hollow-Core Blocks gain their strength?
The hollow-core cavity is designed to receive reinforcing steel and concrete infill. Once reinforced, the system functions as a monolithic structure capable of handling demanding structural applications.
Are Freestanding Hollow-Core Blocks suitable for flood walls?
Yes. Freestanding Hollow-Core Blocks are commonly used in flood protection, detention ponds, channels, and other water management projects where reinforced concrete structures are required. View a Conceptual Flood Control Wall Design and Construction Notes for more information.
Can Freestanding Hollow-Core Blocks be used for crash-rated barrier walls such as TL-4 barriers?
Yes. Freestanding Hollow-Core Blocks have been extensively tested and can be included as part of a TL-4 barrier system when designed by a qualified engineer to meet project-specific requirements. The hollow-core design accommodates reinforcing steel and concrete infill, enabling the creation of robust barrier structures for transportation and infrastructure applications. Because crash-rated barrier performance depends on factors such as geometry, reinforcement, foundation conditions, and project criteria, each TL-4 application should be evaluated and designed on a project-by-project basis.
What equipment is needed to install Freestanding Hollow-Core Blocks?
Installation typically requires an excavator, loader, or similar lifting equipment to safely place precast concrete units, along with standard site preparation and concrete placement equipment. Specific requirements vary based on project design and reinforcement details.
What face textures are available for Freestanding Hollow-Core Blocks?
Freestanding Hollow-Core Blocks can be produced with natural-stone-inspired faces, including Cobblestone, Kingstone, Ledgestone, Limestone, and Smooth textures. Texture and color availability vary by local manufacturer and region.
What materials can be used as infill for Freestanding Hollow-Core Blocks?
The hollow-core design allows the blocks to be filled with aggregate or concrete and reinforced when necessary, giving engineers flexibility to meet a wide range of loading conditions and performance requirements.