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 Engineering Laboratory /                  Fire Research Division
      National Fire Research Laboratory


    Breadcrumb
    Fire Calorimetry Database (FCD)
          Steel-Concrete Composite Floor Systems Subject to Fire, Phase 2CompositeFloorTest_No2

      Table 1. Test Information
        Name
            CompositeFloorTest_No2Date
            03/10/2021 6:15:53 AM ESTDescription
            Simulated standard fire. Total mechanical load = 28 kips;
Slab reinforcement = #3 bars at 12 in. spacing. Simulated ASTM E119 upper layer temp; Max 12 MW fireSpecimen
            Four square burnersIgnition
            pilot flameProject ID (s)
            Steel-Concrete Composite Floor Systems Subject to Fire, Phase 2Test Director
            ChoeDownload CSV data file

      Timelapse Video with Heat Release Rate Plot
  Your browser does not support the video tag.Table 2. Summary of Test Results
        Measurement
          Value
          Uc
          UnitPeak Heat Release Rate, PHRR
            12,776
            653
            kWTime to Peak Heat Release Rate
            118.23
            0.17
            minTotal Heat Released, THR
            86,908
            4,461
            MJNatural Gas Burner Total Heat Released, NGTHR
            81,287
            1,159
            MJHeat Release Quality Confirmation, HRQC
            Not measured
            -
            MJ/MJNet Specimen Mass (gravimetric), NM = Mi-Mf
            Not measured
            -
            kgTotal Fuel Mass Burned, TFM = THR / HOCf
              1,738
              103
              kgNet Effective Heat of Combustion = THR / NM
            Not measured
            -
            MJ/kgO2 Yield = O2 Consumed / TFM
            3.68
            0.25
            kg/kgCO2 Yield = CO2 Generated / TFM
            2.98
            0.21
            kg/kgCO Yield = CO Generated / TFM
            0.00737
            0.00051
            kg/kgSoot Yield = Soot Generated / TFM
            Not measured
            -
            kg/kgBaseline Hood Exhaust Flow
            107.2
            3.2
            kg/sTest Duration = Time(Fire Out) - Time(Ignition)
            160.43
            0.03
            min*Uc = Combined Expanded Uncertainty with 95% confidence level*

      Table 3. Summary of Test Input Parameters
        Parameter
          Value
          Uc
          UnitFuel Type
            Natural Gas
            -
            -Hood Size
            15
            -
            mEffective Duct Diameter
            2.424
            0.009
            mExhaust Flow Correction Factor
            1.042
            0.032
            -Net Heat of Combustion (per unit mass O2), Ef
            12.54
            0.50
            MJ/kgNet Heat of Combustion(per unit mass fuel), HOCf
            50.00
            1.50
            MJ/kgInitial Specimen Mass, Mi (gravimetric)
            Not measured
            -
            kgFinal Specimen Mass, Mf (gravimetric)
            Not measured
            -
            kgPlot of Fire Heat Release Rate with event markers. Uncertainty bar shown at peak value.**Figure 1.** Plot of Heat Release Rate data with event markers and error bars shown at peak.


      Table 4. Summary of Observed Test Events
        Event
          Time (min)
          Description
          Video Snapshot Image1
  0.00
  Ignition
  Ignition
  peak
  118.23
  Peak HRR
  Peak HRR
  2
  160.43
  Fire Out
  Fire OutTable 5. Supplemental Data Plots
      Plot of Oxygen Dry Volume Fraction in hood exhaust stream.Plot of Oxygen Dry Volume Fraction in hood exhaust stream.
        Plot of Carbon Dioxide Dry Volume Fraction in hood exhaust stream.Plot of Carbon Dioxide Dry Volume Fraction in hood exhaust stream.
        Plot of Carbon Monoxide Dry Volume Fraction in hood exhaust stream.Plot of Carbon Monoxide Dry Volume Fraction in hood exhaust stream.
        Plot of Radiant Heat Flux data with event markers. r= radial distance from center of hood, h=height above floor. Plot of Radiant Heat Flux data with event markers. r= radial distance from center of hood, h=height above floor.
        Plot of Smoke Laser Extinction Coefficient in hood exhaust stream.Plot of Smoke Laser Extinction Coefficient in hood exhaust stream.
        Plot of Exhaust Duct Mass Flow Rate.Plot of Exhaust Duct Mass Flow Rate.

      Bryant, R. and Bundy, M. The NIST 20 MW Calorimetry Measurement System for Large-Fire Research, Technical Note (NIST TN) 2077, 2019https://doi.org/10.6028/NIST.TN.2077
        NIST Fire Calorimetry Database (FCD)https://doi.org/10.18434/mds2-2314

            Report Process Script Version
                                NFRL_Report_8.4.3


      Last Updated June 22, 2022
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