Laserfiche WebLink
• • <br /> ISO 6944 exposes a duct assembly to a fire test curve defined in ISO 834. ASTM E 119 defines its own <br /> fire test curve. <br /> Similarity of the Fire Test Curves <br /> The following table shows the time-temperature curves for the two fire test curves,ASTM E 119 and ISO <br /> 834: <br /> Temperature(F) <br /> Time ASTM E ISO <br /> (min.) 119 834 <br /> 0 68 68 <br /> 5 1000 1069 <br /> 10 1300 1254 <br /> 15 1399 1360 <br /> 20 1462 1438 <br /> 25 1510 1499 <br /> 30 1550 1546 <br /> 35 1584 1589 <br /> 40 1613 1625 <br /> 45 1638 1656 <br /> 50 1661 1684 <br /> 55 1681 1710 <br /> 60 1700 1733 <br /> 65 1718 1755 <br /> 70 1735 1774 <br /> 75 1750 1794 <br /> 80 1765 1810 <br /> 85 1779 1827 <br /> 90 1792 1842 <br /> 95 1804 1857 <br /> 100 1815 1872 <br /> 105 1826 1884 <br /> 110 1835 1897 <br /> 115 1843 1909 <br /> 120 1850 1920 <br /> From this table it can be seen that in an ASTM E 119 fire test the temperature rises slightly faster than ISO <br /> 834 in the first 30 minutes, whereas the ISO 834 is a hotter fire test after the first 30 minutes. The <br /> temperature the duct system is exposed to in 1-hour is 1700°F for the ASTM test,and 1733°F for the ISO <br /> test. At 2-hours the ASTM temperature is 1850°F while the ISO temperature is 1920°F. <br /> Michael T.Johnson <br /> Senior Engineer,Fire Protection <br /> www.morganthermaiceramics.com <br /> Insert Register Legal Entity name,address end number,or at other details as required to comply with regional regulallons <br /> 2CI\ <br />