Analysis, Design & Performance

Full Session with Abstracts

338904-2 - Performance Based Fire Engineering for Mid-rise and Tall Steel Buildings

Saturday, April 21
8:00 AM - 9:30 AM
Location: 203BC

Description:
This presentation will discuss the implementation of performance-based fire engineering (PBFE) for typical mid-rise and tall steel buildings. PBFE is an alternative to the traditional prescriptive method of designing fire protection and relies on simulating the response of structures to several fire scenarios. The use of PBFE is included for the first time in the Appendix E of the 2016 edition of ASCE7 and is expected to be adopted more widely in the US over the next decade as a better means of designing fire resilient structures by providing more accurate evaluations of their behavior while subjected to different levels of fire hazard. The process of PBFE will be briefly introduced at the start of the presentation, from the general regulatory environment down to an overview of the fire simulation, thermal and structural analyses that must be combined to estimate the effect of a fire on a structure. The presentation will then focus on the use of NIST’s Fire Dynamic Simulator (FDS) for the simulation of fire initiation and propagation in floors of typical office buildings. Fire simulations include localized fires in small areas as well as fully developed fires affecting large areas of open floors. The presentation will then discuss the effects of a few selected fire scenarios on the performance of the structure at member and system levels. Structural evaluation will be conducted at multiple levels, ranging from simple methods for cases with lower temperatures and advanced finite element methods for scenarios where parts of the structure reach critical temperature levels. Overall, the presentation will demonstrate how PBFE enables us to conduct realistic performance evaluations for different scenarios to achieve a resilient and cost-effective design.

Takeaways:
- Attendees will become familiar with the PBFE process and see examples of its different steps.
- The presentation will show how PBFE can be used to achieve a resilient and cost effective design.
- Attendees will understand the extent to which the results of a fire simulation can vary with the parameters of the analysis methods.

Reza Imani

Project Enginner
Thornton Tomasetti, Inc.

Dr Imani conducted experimental and numerical studies on post-earthquake fire resistance of specific types of structures. After graduation, he has been practicing structural engineering with the firm Thornton Tomasetti, where he has continuously been part of efforts to bring performance-based fire engineering closer to the real world projects. He is also a member of the ASCE Fire Protection Committee.

Presentation(s):

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338904-2 - Performance Based Fire Engineering for Mid-rise and Tall Steel Buildings



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