Blast Mitigating

Blast Mitigating Systems

With company origins in the federal market focused on blast resistant curtain wall and window systems, we continue to work on projects that require blast mitigating systems, such as high-value, high-security facilities for the General Services Administration, the Department of Defense, and the Department of State.

Solutions to Prevent Blast Penetration

A blast mitigating curtain wall is a façade system engineered to absorb, deflect, or contain blast pressure from explosions. Unlike standard curtain walls, these systems use reinforced framing, laminated glazing, and specialized anchoring to improve occupant protection and reduce damage. 

 

During a blast event, the system deforms in a controlled manner, allowing the framing and glazing to manage pressure without catastrophic failure. The laminated glass holds together even when cracked, dramatically reducing hazardous glass fragment and other missile projection – one of the primary causes of injury in explosions.

Security Clearance for Sensitive Projects

Our team and manufacturing facility hold the highest levels of security clearance, allowing us to access sensitive project sites and handle restricted information. Our secure production environment ensures that all materials are fabricated, stored, and prepared under strict security protocols before being delivered to the jobsite for installation.

Standards for Blast Resistant Curtain Walls

At Physical Security, we are well versed in agency specific standards and test methods, including:

UFC 3-340-02

Structures to Resist the Effects of Accidental Explosions

PDC-TR 10-02

Blast Resistant Design Methodology for Window Systems

ASTM F2248-19

Equivalent 3-Second Duration Design Loading for Blast Resistant Glazing 

ASTM F1642

Glazing and Glazing Systems Subject to Airblast Loading

GSA TS01-2003

Glazing and Window Systems Subject to Dynamic Overpressure Loadings

Projects

Jackson Memorial Hospital

Location

Miami, FL

View Project Details

FAQs About Blast Mitigating Systems

  • How does a blast mitigating curtain wall work?

    It works by combining flexible structural behavior with laminated glass and robust connections. When a blast wave hits, the system deforms in a controlled way, keeping the glazing intact and preventing hazardous debris from entering the building.

  • Is laminated glass required for blast mitigation?

    Yes. Laminated glass is essential because its interlayer holds fractured glass together during a blast event. It dramatically reduces flying glass hazards, which are a major source of injuries in explosions.

  • Can blast mitigating systems still look like conventional curtain walls?

    Yes. Systems are often designed to maintain a modern architectural aesthetic. Reinforcement is often concealed in the framing, and laminated glass can be specified with the same appearance as standard glazing.

  • Do blast resistant curtain walls need special frames?

    Yes. Frames must be engineered to resist blast pressures and transfer loads safely to the building structure. This often includes deeper profiles, stronger alloys, or steel reinforcement.

  • Are blast mitigating curtain walls also energy-efficient?

    They can be. Laminated glass and reinforced framing can be combined with low-E coatings, thermal breaks, and insulated glass units to meet energy-code requirements and performance goals.

  • Does a blast mitigating curtain wall require special installation?

    Yes. Installers must follow engineered details precisely, especially for anchoring back to the structure. Proper installation is critical for the system to perform as designed during a blast event. Because Physical Security team members serve as both engineers and installers, there is a reduced risk of communication breakdown.

  • What factors influence the cost of blast resistant curtain walls?

    Cost varies depending on protection level, glazing type, framing strength, architectural complexity, and testing requirements. While more expensive than standard systems, they offer essential life-safety benefits, protection for valuable assets, the ability to keep critical facilities operational, and reduction in long-term liability.

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