Monday, November 15, 2021

What is Progessive Collapse and How Does it Relate to Blast Design?


IEI routinely conducts peer reviews of both structural and physical security designs on behalf of the federal government. A fundamental concept used in blast design is the Conservation of Energy Principal – energy cannot be created or destroyed. However, a blast can hit a building and transfer its energy, much like a bowling ball knocking down pins.

The UFC defines Progressive Collapse as “The spread of an initial local failure from building element to building element, eventually resulting in the collapse of an entire structure or a disproportionately large part of it.” Progressive Collapse can be prevented by adding redundancy and local hardening to the structural design of the building.

UFC 4-010-01 aim to reduce collateral damages and the scope and severity of mass casualties in buildings in the event of a terrorist attack. It encourages the use of cost effective, implementable, and enforceable means of protecting personnel if such an attack were to happen.

UFC 04-010-01 identifies 21 standards that must be considered for physical security design. These standards include but are not limited to:

  • Building overhangs and breezeways
  • Exterior masonry walls
  • Windows and skylights
  • Building entrance layouts
  • Exterior doors


Read the full list and learn more about blast design engineering on our website.


Innovative Engineering Inc., Provides Blast Design Expertise


It is highly advantageous for the physical security consultant to assume Engineer of Record responsibilities. If this does not happen, you will often be left with a report of requirements by the consultant that have not been actually incorporated into the construction documents.

Innovative Engineering will be exhibiting at The Society of American Military Engineers (SAME) Small Business Conference this year at the Georgia World Congress Center! Come get your picture with Bigfoot!

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