United States Government Publishing Office publisher pbl distributor dst United States Commerce Department National Institute of Standards and Technology (NIST) author aut Government Organization Choe, Lisa. author aut text government publication eng GOVPUB Executive Agency Publications executive 2023-10-27 Commerce Department 2022-06-01 monographic deposited born digital 92 digital object pages C 13. https://www.govinfo.gov/app/details/GOVPUB-C13-3246d0b2d2f01c693971487face32ebe P0b002ee1c1bb3f25 on1389890419 (OCoLC)1389890419 DGPO 2023-10-27 2026-06-27 GOVPUB-C13-3246d0b2d2f01c693971487face32ebe machine generated eng fdlp C13 GOVPUB-C13-3246d0b2d2f01c693971487face32ebe 3246d0b2d2f01c693971487face32ebe GOVPUB NIST Technical Notes NOTE: THE “DATE ISSUED” ABOVE MAY DEFAULT TO JANUARY 1ST OF A GIVEN YEAR. TO THE VIEW THE MOST ACCURATE DATE OF ISSUE, REVIEW THE TITLE PAGE OF THE PUBLICATION. Studies or reports which are complete in themselves but restrictive in their treatment of a subject. Analogous to monographs but not so comprehensive in scope or definitive in treatment of the subject area. Often serve as a vehicle for final reports of work performed at NIST under the sponsorship of other government agencies. National Institute of Standards and Technology Commerce Department. National Institute of Standards and Technology. 2022 2022-06-01 https://www.govinfo.gov/app/details/GOVPUB-C13-3246d0b2d2f01c693971487face32ebe https://www.govinfo.gov/content/pkg/GOVPUB-C13-3246d0b2d2f01c693971487face32ebe/pdf/GOVPUB-C13-3246d0b2d2f01c693971487face32ebe.pdf Full-Scale Experimental Evaluation for Influence of Slab Reinforcement (Test #2) Compartment fire experiments Composite floors Fire resistance Fires Slab reinforcement Steel buildings Choe, Lisa. creator Choe, Lisa. Ramesh, Selvarajah. Hoehler, Matthew. Bundy, Matthew. Bryant, Rodney. Dai, Xu. Story, Brian. Chakalis, Anthony. Chernovsky, Artur. National Institute of Standards and Technology (U.S.) Engineering Laboratory mdu U.S. Dept. of Commerce, National Institute of Standards and Technology 2022-06-01. monographic 1 online resource (92 pages) : illustrations (color) text technical report eng 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 assemblies with the two-story steel gravity frame, two bays by three bays in plan. This report presents the experimental design and results from the second fire experiment (Test #2) conducted at the National Fire Research Laboratory. The Test #2 was aimed to investigate the influence of the slab reinforcement on the structural integrity of the 9.1 m 6.1 m steel-concrete composite floor subjected to combined mechanical loads and compartment fire exposure. The fire test bay was situated on the ground floor in the middle edge bay of the two-story test building. The floor slab in the test bay was reinforced with the No.3 deformed bars placed 30 cm on center (230 mm2/m). The test floor was hydraulically loaded to 2.7 kPa to mimic the code-prescribed gravity loads for fire conditions. The natural gas burners created a peak gas temperature exceeding 1100 C below the test floor. The test fire lasted about 131 min, but the hydraulic loading was not removed until the test floor cooled down over 2 hours. This experimental study confirmed that the steel reinforcement played a vital role in maintaining the integrity of the composite floor under prolonged compartment fire exposure. The mid-panel vertical displacement increased at a rate less than 1 mm/ C as the protected steel beams were heated to 850 C on average. The peak vertical displacement of the test slab was recorded 475 mm surpassing the displacement limit prescribed in the standard fire test. Although the test slab developed extensive surface cracks, it successfully contained the test fire underneath while sustaining the imposed loads simultaneously. The test floor retained the post-fire flexural strength exceeding 90 % of the ambient design strength of the composite secondary beam prior to fire exposure. The experimental results presented in this report can be used for validation of predictive models to perform parametric studies incorporating the variability in the steel reinforcement scheme (area, spacing, and material) for safer and cost-effective composite floor construction for fire safety. Lisa Choe; Selvarajah Ramesh; Matthew Hoehler; Matthew Bundy; Rodney Bryant; Xu Dai; Brian Story; Anthony Chakalis; Artur Chernovsky. June 2022. Title from PDF title page (viewed January 4, 2023). Includes bibliographical references. Approved by the NIST Editorial Review Board on 2022-05-17 Mode of access: World Wide Web. Systems requirements: Adobe Acrobat PDF reader. Fires Composite floors Slab reinforcement Steel buildings Fire resistance Compartment fire experiments https://doi.org/10.6028/NIST.TN.2203 full-scale experimental evaluation for influence of slab reinforcement (test #2) full-scale experimental evaluation for influence of slab reinforcement (test #2)