BLAST RESISTANT STEEL OVERHEAD DOORS & FRAMES

blast_resistant_overhead

AMBICO blast resistant steel overhead doors combine outstanding blast and air pressure resistance with the appearance and function of conventional overhead door products. Our entire range of blast resistant products are readily available complete with rugged hardware and electrical operators that provide an easy-to-operate door system.

  • Full engineering capability to design and manufacture blast resistant overhead door and hardware assemblies to meet the demanding safety requirements of the end user.
  • Multi-leaf design integrates sectional steel panels that telescope easily above the header of the door opening. A rugged counter-weight system supports the movement of individual door sections faultlessly.
  • Electrical operators and accessories operate the entire assembly in accordance with up to date NEMA standards.
  • Testing of assemblies by independent laboratories complies with current test standards for explosion or pressure resistance.
  • Factory personnel are available on demand to oversee product installation anywhere in the world.

Available in Low Range units: 15 PSF to 2 PSI
Available in Mid Range units: 3 PSI to 8 PSI

What is a blast resistant overhead door?
This is a highly engineered, multi-leaf door assembly that combines blast resistant panels designed to operate with upward-acting, counter-weight overhead door hardware. The entire assembly is designed to withstand to withstand explosive pressure ranging from ten pounds per square foot (psf) to ten pounds per square inch (psi).  AMBICO blast resistant products have been laboratory tested and are independently certified by professional engineers.

Why must the factory supply the door hardware complete with blast resistant doors?
Door hardware has been specifically designed and tested to form an integral part of AMBICO blast resistant units. When the door is under pressure in the unseated position the entire assembly can be subject to severe structural loads..

Can AMBICO provide guidance in specifying these unique products?
We recognize that last blast resistant steel overhead doors are a highly specialized product. AMBICO engineers look forward to working with AEC professionals to provide a detailed specification prior to tender in order to meet the demands associated with unique project applications.

Does AMBICO provide an installation service for these large doors?
AMBICO has extensive experience with installation of these products. On request, AMBICO provides a lead-hand from the factory to work closely with local installation forces to review the scope of work at the site, to assist with the layout of the materials and to troubleshoot at the close-out of the project.

What is meant by the term “rebound pressure” and how does it affect the blast resistant product that is specified?
Blast events are defined by two distinct phases-an initial phase where the full amount of the explosive pressure specified is loaded onto the assembly and a second phase which is also known as the “rebound” pressure where the initial blast pressure dissipates to the ambient pressure immediately prior to the blast event. The extent of the blast pressure during the rebound phase is expressed as percentage of the initial blast pressure. This figure ranges from zero percent to one hundred percent. When a 100% rebound load is specified the door assembly must withstand the full load of the blast in both directions. When the rebound load is 0% the door assembly must withstand the blast load in the initial phase only..

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