Blast-Resistant Modules

A blast-resistant module (BRM), also referred to as a blast-resistant building (BRB) is a structure designed to withstand the impact of explosions, such as bomb blasts or other high-energy events. These modules are built with specialized materials and construction techniques that absorb, deflect, or disperse explosive energy. Commonly used in high-risk areas like industrial zones, disaster preparedness sites, conflict zones, and other critical infrastructure, BRBs also play a key role in industries such as chemical plants and oil refineries where explosions or fires are a major hazard. Their primary goal is to protect occupants and minimize damage, enhancing the safety and security of both the building and its surroundings.

BRBs are rated in two ways—the amount of pressure they can withstand from an explosion and the response level. The amount of pressure in pounds per square inch (PSI) that the building can withstand is given a number rating. The higher the rating, the more resistant the building is to blasts. The American Society of Civil Engineers (ASCE) establishes response level ratings based on the predicted amount of repair that a structure would need after an explosion. The response level ratings are low, medium and high. With low meaning an explosion would do very little damage and require a low response and high meaning the building is predicted to sustain substantial damage in an explosion.

The appropriate blast rating should be established through a site-specific risk assessment or blast study completed by qualified engineering and safety professionals. Factors may include the building’s location, anticipated blast load, occupancy, response level and applicable facility standards. Hunter Onsite can help identify available building configurations after your project requirements have been determined.

A blast-resistant building is engineered to withstand a specified blast load and response level while helping protect its occupants. “Blast-proof” suggests complete protection from every possible explosion, which no building can guarantee. For this reason, blast-resistant is the more accurate industry term.

Standard features vary by building and configuration but may include finished walls and flooring, lighting, electrical outlets, HVAC, emergency exit lighting, fire extinguishers, smoke and CO₂ detectors, and exterior doors with panic hardware. Contact our team to confirm the features included with a specific unit.

Yes. Furniture packages can be added to many building configurations and may include desks, chairs, workstations, shelving and other items needed for a functional workspace. Available options depend on the building layout and project requirements.

The placement area should generally be level, stable and accessible to the delivery vehicle. Adequate clearance may also be required for delivery, placement and utility connections. Our team can review site access and preparation requirements with you before delivery.

Most Hunter Onsite units can be placed using roll-off delivery, so a crane is generally not required. Larger multi-unit complexes or sites with limited access may require additional equipment or installation planning. Delivery requirements are confirmed based on the building configuration and site conditions.