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Search Publications by: Selvarajah Ramesh (Assoc)

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Displaying 1 - 15 of 15

Fire Resilience of a Steel-Concrete Composite Floor System: Full Scale Experimental Evaluation for Influence of Slab Reinforcement and Unprotected Secondary Beam (Test #3)

October 2, 2023
Author(s)
Selvarajah Ramesh, Lisa Choe, Matthew Hoehler, Matthew Bundy, Rodney Bryant, Giovanni Di Cristina Torres, Brian Story, Anthony R. Chakalis, Artur A. Chernovsky, Philip Deardorff, Michael Selepak
The National Fire Research Laboratory at the National Institute of Standards and Technology conducted a series of large compartment fire tests to investigate the behavior and fire-induced failure mechanisms of full-scale composite floor assemblies with a

FIRE RESILIENCE OF STEEL-CONCRETE COMPOSITE FLOOR SYSTEMS

November 30, 2022
Author(s)
Selvarajah Ramesh, Lisa Choe, Matthew Hoehler, Matthew Bundy
This paper presents the results of compartment fire experiments conducted on 9.1 m × 6.1 m steel-concrete composite floors in a full-scale, two-story, two-bays by three-bays steel gravity frame building to investigate the fire resilience of these widely

Fire Resilience of a Steel-Concrete Composite Floor System: Full-Scale Experimental Evaluation for U.S. Prescriptive Approach with a 2-Hour Fire-Resistance Rating (Test #1)

October 5, 2021
Author(s)
Lisa Choe, Selvarajah Ramesh, Xu Dai, Matthew Hoehler, Matthew Bundy, Rodney A. Bryant, Brian Story, Anthony R. Chakalis, Artur A. Chernovsky
The National Institute of Standards and Technology is currently conducting a series of large compartment fire tests to investigate the behavior and fire-induced failure mechanisms of the full-scale composite floor systems situated in the two-story and two

Experimental investigation of structural steel beams subjected to localized fire

May 29, 2020
Author(s)
Selvarajah Ramesh, Lisa Y. Choe, Chao Zhang
This paper presents an experimental behavior of unprotected W16 × 26 steel beams subjected to localized fire. Beam specimens were either simply supported or connected to steel columns via all bolted double angle connections. Two test fires, steady or

Behavior and Limit States of Long-Span Composite Floor Beams with Simple Shear Connections subject to Compartment Fires: Experimental Evaluation

March 24, 2020
Author(s)
Lisa Y. Choe, Selvarajah Ramesh, William L. Grosshandler, Matthew S. Hoehler, Mina S. Seif, John L. Gross, Matthew F. Bundy
This paper presents the results of compartment fire experiments on four 12.8 m long composite floor beams with various end support conditions. Specimens were constructed as partially- composite beams, consisting of W18x35 steel beams and 83 mm thick

Compartment Fire Experiments on Long-Span Composite-Beams with Simple Shear Connections Part 1: Experiment Design and Beam Behavior at Ambient Temperature

October 22, 2019
Author(s)
Selvarajah Ramesh, Lisa Choe, Mina S. Seif, Matthew Hoehler, William L. Grosshandler, Ana Sauca, Matthew Bundy, William E. Luecke, Yi Bao, Matthew Klegseth, Genda Chen, John Reilly, Branko Glisic
The National Institute of Standards and Technology recently expanded its large-scale structural-fire testing capabilities in the National Fire Research Laboratory. A landmark test series was conducted on long-span steel-concrete composite floor beams

Localized fire tests on steel beams with different end restraints

November 1, 2017
Author(s)
Selvarajah Ramesh, Mina S. Seif, Lisa Choe
Two 6.2-m span I-shaped structural steel beams were tested under combined structural and open flame localized fire loads. Two different support conditions for the beam ends were considered: (i) simple support, and (ii) double-angles bolted to laterally

Performance of Composite Beams in Fire: Pre-test Analysis of Full-scale Experiments

July 23, 2017
Author(s)
Joseph Main, Fahim H. Sadek, Jonathan Weigand, Jian Jiang, Lisa Choe, Selvarajah Ramesh, Matthew Hoehler, John L. Gross
This paper presents results from pre-test analysis of a full-scale 42 ft (12.8 m) span composite beam with bolted angle connections, under uniform gravity loading simulated using six equally spaced concentrated loads, and subjected to a 4000 kW compartment

The performance of structural steel beams subject to a localized fire

June 7, 2016
Author(s)
Lisa Choe, Selvarajah Ramesh, Chao Zhang, John L. Gross
This paper presents the results from the open flame, localized fire tests conducted on the 6.17-m long, simply supported W16×26 beam specimens. The cross sections at midspan (i.e. expected plastic hinge zone) of the beam specimen directly exposed to the