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          Designed For The Petrochemical, Refining, and Chemical Processing Industries.

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Blast Resistant Buildings

Rigid Global Buildings is a Leading Supplier of Metal Buildings

Blast Resistant Metal Buildings

Rigid has partnered with Baker Risk Engineering to provide a cost effective alternative to typical blast buildings. Rigid’s blast buildings come with not only a comprehensive blast analysis using dynamic modeling, but also the guaranteed quality of a Pre-Engineered Metal Building. Blast loads up to 5 psi, custom designed metal building layouts, and our dynamic approach to design ensures the best quality and price.

Blast Partnership

In 2015 Rigid formally teamed with Baker Engineering and Risk Consultants (BakerRisk), an industry leader in the design and evaluation of blast resistant construction, to deliver Blast Resistant Pre-Engineered Buildings for industrial applications. Together Rigid and BakerRisk offer a turn-key solution that couples the comprehensive understanding of blast design with the efficiencies of a Pre-Engineered Metal Building. This turnkey solution will ensure the piece-of-mind needed, to confidently deliver a product that meets the specification and owner’s requirements.

With the emergence of domestic fracking and the associated growth in natural gas and refining facilities, several owners have encountered the challenge of safely locating personnel around expanding production and within limited real estate.  This challenge, and the emergence of updated industry guidance like API RP 752 and API RP 753, has pushed owners to retrofit existing structures for higher blast loads or construct new buildings to accommodate the growth and meet the latest industry guidance.

Rigid / BakerRisk recognized this need within the petrochemical processing industry for a more versatile, customizable structure, capable of withstanding blast loads.  Historically there have been two primary options to consider when constructing a new industrial blast resistant building. They are reinforced concrete structures and blast resistant modular buildings (BRM).

While both options have merit in resisting blast loads, Rigid understands that both options can be restrictive when considering versatility, customization, schedule and cost.

With the advances in engineering and testing, Pre-Engineered Metal Buildings have become the building of choice when the blast load is between 0 and 5 psi.  Pre-Engineered Metal Buildings can be engineered and designed to be more cost efficient and durable in this blast range.

Conventional Design

Blast Resistant Design

CompulsoryOften voluntary
Governed by building codeDesign specification selected by owner
Loads prescribed by codeDesign load related to owner decision
Enforced by building officialsExempt from building official review
Loads are staticLoads are dynamic (time dependent)
Response is elasticResponse exceeds elastic limit, can accept significant permanent deformations
Analysis is staticDynamic analysis methods are needed
Material properties are conservative (reduced from nominal by safety factors)Material properties are realistic (increased from nominal for dynamic effects and typical over-strength)

Blast Resistant PEMB Advantages

PEMB:
  • The Blast Resistant PEMB is the best priced option when the blast loads are between 0-5 psi. PEMB are typically 30% - 50% less expensive than modular buildings. When compared to concrete construction, the PEMB option can be more than 50% less in construction cost.
MODULAR:
  • Most modular building units are a "one size fits all" solution. You get a building that is rated to a specific blast pressure, often higher than what is required at the building location. This means your are overpaying for additional blast materials and strengthening which may not be necessary. Another difficulty with modular buildings are the lack of customization options. Buildings are designed in pre-designated widths, lengths and heights, not allowing for custom sizes to be chosen by the client. Again they are more of a "one size fits all" method of construction.
CONCRETE:
  • Concrete buildings are very efficient when the blast criteria is high. For example, a building needed right next to a process unit might require a 10 psi blast rating, however this form of construction becomes very cumbersome when blast load criteria falls in this 0-5 psi range. Material costs for concrete can fluctuate based on local demand and supply can be limited. Working with large precast panels or tilt wall panels, can be cumbersome on site requiring many laborers to be active within the refinery confines. In most facilities space can be limited and this presents major site challenges. Concrete buildings are typically double the cost of a Blast Resistant PEMB.

FUTURE MODIFICATIONS:

PEMB:
  • Pre-Engineered Metal Buildings are very easy to modify. For example, the process area grows and suddenly the operator finds the structure they built 5 years ago now falls into a new, higher blast contour. In this scenario, a metal building could easily be retrofitted and upgraded to meet the new blast load criteria.
MODULAR:
  • In the same scenario, a modular building may have to be torn down and replaced as future modifications are not easily achieved.
CONCRETE:
  • A concrete building may have to be torn down and replaced as future modifications are not easily achieved.

CUSTOMIZATION:

PEMB:
  • PEMB is very customizable, any width, any length, virtually any height or ridge orientation. Exteriors of PEMB can be fitted with Stone, Stucco, EIFS, Hardie Board, Vinyl Siding, etc. Much like you would see in a commercial application.
MODULAR:
  • Modular building units fall into the "one size fits all" approach, with pre-set dimensions and no options for dressing up the exterior.
CONCRETE:
  • Concrete buildings offer a little more flexibility with regard to ascetics, but are still quite limited with options for the client.