Articles

Ask Five Questions Before Choosing A Blast-Resistant Building

March 20th, 2013   |  3 min. read
Ask Five Questions Before Choosing A Blast-Resistant Building Blog Feature
Although there are no regulations in place for the design and construction of blast-resistant buildings (BRBs), many of us are working toward that goal. In the meantime, here is a list of questions everyone should ask before buying a BRB.

1. Was the BRB designed and tested by a blast expert?

BRB-expert.jpgThe science of blast-resistant building (BRB) design is still considered new, and only a small group of experts have tested their designs. Make sure your BRB design has been taken off the drawing board and successfully blast-tested under the supervision of a well credentialed engineer.

2. Are blast test reports specific and conclusive?

There are many interpretations of the term blast-tested (see question five), but a successfully blast-tested building has the proven ability to actually save lives. Pay special attention to psi ratings when you review blast test reports because different applications call for different specifications. A laboratory BRB placed next to a blowdown stack should carry a higher rating, such as 8 psi, while a guard shack placed at the perimeter of your facility may only need a 3- to 5-psi rating.

3. Was the BRB blast-tested for nonstructural/ structural components?

If a structure survives a blast but its interior walls, lights or other fixtures create Non-structural components should be consideredshrapnel, the risk of casualties is still high. Always ask BRB vendors to provide data and rationale for nonstructural items including wall and ceiling finishes, light fixtures, plumbing fixtures, cabinets, placement of open shelving (should be no higher than 40 inches above the floor) and placement of any intake points (should be less than 3 feet above ground level).

4. Can the following information be provided?

  • Was the BRB tested dynamically rather than statically?
  • Was the BRB tested in a free field environment?
  • Was a P-I (pressure-impulse) curve generated to show the BRB's response over a wide range of blast loading?

These items are too technical to cover in the context of this article but should be on your list of discussions to initiate with any BRB vendor. Our engineering department can even address these issues with you too. 

5. Does the BRB's response level demonstrate its capability to save lives?

As mentioned in question two, interpretation of ratings is everything. A BRB vendor can claim its product has been blast-tested (and maybe it has) but if closer examination of test data demonstrates a high-response result, this is not the BRB you want protecting your personnel. Response level ratings have been established by the American Society of Civil Engineers to predict the extent of repair resources needed after an explosion. Here's the key: high response equals high damage, so it's crucial to study the response level table, then take a very close look at any BRB's response rating for a given psi (as proven through actual blast testing).

With continued research and product development, previously hazy areas of BRB engineering are quickly coming into focus. When you go shopping for a BRB, it's important to ask solid questions and expect solid answers. What it really boils down to is finding a vendor that's committed to doing the right thing, and this commitment will be visible in the vendor's documentation.

Jeff Lange

Jeff Lange

Jeff Lange, now a managing partner for LANGE, the parent company of RedGuard, founded the company as ABox4U in 1998. It was originally a portable storage company that through the years has been rebranded and specialized to create blast-resistant buildings for oil and gas companies. He saw the need early on to focus on safety and made it a passion to create products that save lives. He has built a strong leadership team at RedGuard to oversee the day-to-day operations and he remains a managing partner at RedGuard, as well as several other divisions of his LANGE company.