Protective Building Systems

The Science Behind Our Buildings

The first engineered blast rated module (BRM) was built in the late 1990’s for a major Chemical Plant in Baton Rouge Louisiana. At the time, the conventional wisdom was that the buildings needed an anchoring device to prevent the building from turning over in a blast. Further engineering proved that the building would actually slide – not turn over.


Being in the business of saving lives and having a commitment to quality. Mechanical Integrity removes the ambiguity of the building’s capability and consists of professionally stamped engineering structural drawing and calculations; all material traceability documentation, material tests and non-destructive test reports, MSDS sheets; and all fabrication certifications, including welding and construction process documentation.

Taking into consideration that a large portion of the industry deems our products as critical safety equipment and lines of defense, HMB provides the required documentation for OSHA Mechanical Integrity.

Multiple Modules:

Hallwood Modular Buildings uses a revolutionary process, changing the flexibility and installation of blast resistant buildings. There has been a significant amount of time and money invested in research and development to increase overall customer value by improving the design of our blast resistant buildings. One of the most valuable results of these efforts is a bolted system developed to drastically reduce the installation process for blast resistant modular buildings. The traditional method of installing these buildings involves a time consuming welding process, which is not only more costly and less flexible, but also has significant safety implications when working inside the process area of a refinery.

Our bolted system offers the following benefits:

When compared to the traditional welded method of installing a 24×40 complex, this method offers almost a 7 to 1 reduction ratio in installation time! In less than the time it takes to weld the interior and exterior seams, a building with this system can be completely installed and occupied. A recently completed project of a 36×40 blast resistant modular building comprised of three(3) 12×40 wide open modules was completed in 204 man hours using a 4 man crew. This included offloading the modules with a crane, mechanically fastening the modules together and completing all of the interior finish work required. If this building had been installed using the traditional welded method, this same scope of work would have taken an estimated 1350 man hours.