Blast Walls (Blast Protection Walling)

Blast Walls (Blast Protection Walling)

Proven Protection with Legato® and Vee® Blocks

Precast concrete blast walls engineered to protect people, plant and critical assets from explosive and impact threats across defence, security and high-risk sites.

What are Blast Walls (Blast Protection Walling)?

Our Legato® and Vee® Blocks are robust, precast solutions specifically suited for blast protection and shielding in high-risk defence and security environments. Independently tested with high explosive charges, these blocks demonstrate outstanding resilience under extreme conditions, making them ideal for applications where safety and containment are critical.

Blast walls can be used to reinforce external perimeters, providing an additional layer of defence against:

  • Vehicle-borne threats (VBIEDs)

  • Explosive attacks

  • Unauthorised vehicle access

They can be integrated with fencing, gates and access control systems to create multi-layered security zones.

Why Choose Elite Precast

With decades of precast expertise, in-house engineering support and a proven delivery record on projects of every scale, Elite Precast is the partner specifiers trust. We pair robust, repeatable manufacturing with the flexibility to engineer bespoke solutions when a standard product will not do.

Key Features & Benefits

  • Blast-Resistant Performance – Successfully tested under controlled high-explosive conditions. Independent blast trials confirmed both systems deliver strong protective screening.

  • Fire Resistance – Classified as Class A1 fire resistant in accordance with clause 4.3.4.4 of EN 13369—ensuring performance in both explosive and fire-related scenarios.

  • Modular and Flexible – Available in multiple sizes, the interlocking design of Legato® and Vee® Blocks allows rapid construction of blast walls, barriers and containment structures.

  • Durability – Manufactured from high-strength concrete for long-term resilience against environmental and operational stresses.

Key Features & Benefits

Why Choose Blast Walls (Blast Protection Walling)?

  • Proven blast protection through independent explosive testing

  • Rapid deployment with interlocking modular units

  • Flexible configurations for temporary and permanent blast walling

  • Compliance with European fire resistance standards

  • Trusted by the Ministry of Defence, defence contractors, and critical infrastructure providers

Supporting Modern Defence Requirements

Elite Precast’s blast walling solutions support defence organisations by:

  • Enhancing force protection

  • Improving site resilience

For UK data centres and critical security environments where blast resistance and fire protection are non-negotiable, Legato® and Vee® Blocks deliver a tested, flexible and reliable precast solution.

Why Choose Blast Walls (Blast Protection Walling)?

Compliance & Technical Support

Independent Test Results

Testing was carried out with high explosive charges, measuring performance across multiple gauges:

Gauge 2 (Karablock – available from RSG Structures):

  • Standoff: 2.42 m

  • Peak pressure: 1,516 kPa

  • Positive impulse: 1,304 kPa.ms

Gauge 3 (Vee® Block, with Legato® block positioned in corner):

  • Standoff: 2.43 m

  • Peak pressure: 1,329 kPa

  • Positive impulse: 1,523 kPa.ms

Verified by: Dr Colin Morison – Technical Director — Security & Explosion Effects, TPS

Compliance & Technical Support

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Frequently Asked Questions

What is blast resistant precast concrete walling?

Blast resistant precast concrete walling is a protective system designed to absorb and deflect the impact of explosive forces. Manufactured off-site using high-strength concrete, these modular units provide reliable protection for critical infrastructure such as data centres, defence facilities and high-risk industrial environments.

How do Legato® and Vee® Blocks provide blast protection?

Legato® and Vee® Blocks use a robust interlocking design combined with high-strength precast concrete to create stable, energy-absorbing structures. Independently tested under high explosive conditions, they are proven to reduce blast pressure impact and provide effective protective screening for critical assets.

Are these blast walling systems independently tested?

Yes. Legato® and Vee® Blocks have undergone independent testing under controlled high explosive conditions. Trials verified their performance across multiple gauges, confirming their suitability for blast protection in demanding environments such as UK data centres and defence applications.

What level of blast resistance do these systems offer?

Testing has demonstrated strong performance under significant blast pressures. For example, Gauge 2 testing recorded peak pressures of 1,516 kPa, while Gauge 3 testing achieved 1,329 kPa. These results confirm the system’s capability to provide reliable protection in high-risk scenarios.

Are precast blast walls fire resistant?

Yes. Legato® and Vee® Blocks are Class A1 fire resistant in accordance with EN 13369 standards. This ensures they maintain structural integrity and performance in both blast and fire-related incidents, making them suitable for high-risk and safety-critical environments.

What are the advantages of modular blast walling systems?

Modular precast systems offer several key benefits: Rapid installation compared to in-situ construction Flexibility for temporary or permanent use Scalable configurations for different site requirements Reduced on-site labour and programme time This makes them ideal for fast-track data centre and infrastructure projects.

Can blast resistant walling be used for temporary installations?

Yes. The interlocking design allows blast walling systems to be deployed quickly for temporary protection or reconfigured as needed. They can also be installed as permanent structures, providing long-term security for critical infrastructure.

Where are blast resistant precast walls typically used?

Common applications include: Data centre protection (power units, fuel storage, critical systems) Explosives magazine shielding Destructive valve and pressure testing containment Fireworks and hazardous material storage Defence and security infrastructure

Why are precast concrete blast walls suitable for data centres?

Precast blast walls provide the strength, speed and reliability required for modern data centre construction. They protect mission-critical infrastructure, reduce installation time and deliver consistent quality, key factors in high-value, time-sensitive projects.

How durable are precast blast walling systems?

Precast concrete walling is designed for long-term durability. It offers excellent resistance to environmental conditions, structural stress and operational wear, ensuring ongoing protection for critical infrastructure over time.

Who uses Elite Precast’s blast walling systems?

Elite Precast’s solutions are trusted by: UK data centre developers Ministry of Defence and defence contractors Critical infrastructure providers Security and industrial organisations

What makes Elite Precast different from other suppliers?

Elite Precast combines independently tested blast performance with modular design flexibility and fast deployment. Legato® and Vee® Block systems are engineered specifically for high-risk environments, offering a proven, compliant and scalable solution for blast protection.

What is the difference between hyperscale and colocation data centres?

Hyperscale data centres are large-scale facilities operated by global cloud providers, designed for massive scalability and efficiency. Colocation data centres, by contrast, provide shared infrastructure where multiple clients lease space, power and connectivity within a secure environment.

Why do hyperscale and colocation facilities require blast-resistant perimeter walls?

Both hyperscale and colocation data centres support mission-critical operations and high-value digital assets. Blast-resistant perimeter walls provide essential protection against external threats, helping to maintain uptime, protect infrastructure and meet stringent security requirements.

How do blast-resistant precast walls support hyperscale data centre design?

Precast concrete walling supports hyperscale developments by enabling rapid construction at scale, consistent quality across large sites and the ability to meet strict engineering and security specifications required by global operators.

Are precast concrete walls suitable for phased hyperscale developments?

Yes. Precast systems are ideal for phased construction programmes, allowing perimeter security infrastructure to be installed in line with site expansion while maintaining protection throughout each stage of development.

How do perimeter walls enhance security in colocation facilities?

In colocation environments, where multiple tenants share infrastructure, perimeter walls provide a secure outer boundary, helping to prevent unauthorised access and ensuring tenant assets are protected within a controlled environment.

What role do precast walls play in layered security strategies?

Blast-resistant perimeter walls form the first layer of defence, working alongside access control, surveillance systems and internal zoning to create a comprehensive, multi-layered security approach.

Do precast concrete walls support sustainability targets?

Yes. Precast concrete can contribute to sustainability objectives through: Reduced on-site waste Efficient material use Long service life Potential for thermal mass benefits This aligns with the environmental goals often associated with hyperscale developments.

How do precast walls improve construction efficiency for large data centre projects?

Off-site manufacturing allows for parallel construction activities, reducing programme timelines and minimising on-site labour. This is particularly valuable for hyperscale projects where speed and repeatability are critical.

Can perimeter wall systems be integrated with access and logistics requirements?

Yes. Precast walling can be designed to incorporate gates, access points and service yard interfaces, ensuring smooth logistics flow while maintaining high security.

Are these wall systems suitable for high-risk or urban locations?

Yes. Blast-resistant precast walls are particularly beneficial in high-risk, urban, or constrained environments, where external threats or proximity risks require enhanced protective measures.

What are the long-term benefits for operators and tenants?

For both hyperscale operators and colocation providers, benefits include: Increased asset protection Improved resilience and uptime Reduced maintenance costs Enhanced tenant confidence and trust

What are blast walling solutions?

Blast walling solutions are specially designed structures used to contain, deflect, or absorb the impact of explosions. Elite Precast’s systems use Legato® and Vee® interlocking concrete blocks to create robust, modular blast-resistant barriers for high-risk environments.

What makes Legato® and Vee® Blocks suitable for blast protection?

Both systems are manufactured from high-strength precast concrete and have been independently tested using high explosive charges. These tests confirmed their ability to provide effective protective screening against blast pressure and impulse forces.

What level of blast resistance do the blocks provide?

Testing recorded significant blast resistance, including: Peak pressures exceeding 1,300 kPa Positive impulse values above 1,300 kPa.ms These results demonstrate the systems’ capability to perform in high-risk defence and security environments.

Can the system be reconfigured or relocated?

Yes. One of the key advantages of Legato® and Vee® Blocks is their flexibility. Structures can be reconfigured, extended, or relocated as operational requirements change, particularly useful for defence and temporary installations.

What applications are blast walling systems used for?

Common applications include: Military base perimeter protection Ammunition storage and explosive safety zones Vehicle checkpoints and entry control points Forward operating bases (FOBs) Aircraft and hangar protection Training and testing facilities Personnel protection and shelter systems

Are these systems suitable for temporary defence installations?

Yes. The modular design makes them ideal for rapid deployment in temporary or semi-permanent environments, such as forward operating bases or deployment zones.

UK Manufacturing & Nationwide Delivery

Every product is manufactured in the UK to recognised quality standards and delivered nationwide on a fleet built for site access. The result is shorter lead times, full control over quality, and the confidence of working with a British manufacturer.

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