TABLE OF CONTENTS is virtually identical to ASTM E119 and UL 263, and defines testing criteria used to rate various fire resistant assemblies. Assemblies are tested in a furnace that is brought up in temperature according to the Standard Time-Temperature (STT) Curve. The points on this curve that determine its character are:
| Time | Temperature |
|---|---|
| 5 min | 1000 F |
| 10 min | 1300 F |
| 30 min | 1550 F |
| 1 hr | 1700 F |
| 2 hr | 1850 F |
| 4 hr | 2000 F |
| 8 hr or over | 2300 F |
The full Standard Time-Temperature curve is shown in the following table:
| Time | Temperature | Area Above 68 F | Base |
|---|---|---|---|
| 0:00 | 68 | 00 | 0 |
| 0:05 | 1000 | 2330 | 39 |
| 0:10 | 1300 | 7740 | 129 |
| 0:15 | 1399 | 14150 | 236 |
| 0:20 | 1462 | 20970 | 350 |
| 0:25 | 1510 | 28050 | 468 |
| 0:30 | 1550 | 35360 | 589 |
| 0:35 | 1584 | 42860 | 714 |
| 0:40 | 1613 | 50510 | 842 |
| 0:45 | 1638 | 58300 | 971 |
| 0:50 | 1661 | 66200 | 1103 |
| 0:55 | 1681 | 74220 | 1237 |
| 1:00 | 1700 | 82330 | 1372 |
| 1:05 | 1718 | 90540 | 1509 |
| 1:10 | 1735 | 98830 | 1647 |
| 1:15 | 1750 | 107200 | 1787 |
| 1:20 | 1765 | 115650 | 1928 |
| 1:25 | 1779 | 124180 | 2070 |
| 1:30 | 1792 | 132760 | 2213 |
| 1:35 | 1804 | 141420 | 2357 |
| 1:40 | 1815 | 150120 | 2502 |
| 1:45 | 1826 | 158890 | 2648 |
| 1:50 | 1835 | 167700 | 2795 |
| 1:55 | 1843 | 176550 | 2942 |
| 2:00 | 1850 | 185440 | 3091 |
| 2:10 | 1862 | 203330 | 3389 |
| 2:20 | 1875 | 221330 | 3689 |
| 2:30 | 1888 | 239470 | 3991 |
| 2:40 | 1900 | 257720 | 4295 |
| 2:50 | 1912 | 276110 | 4602 |
| 3:00 | 1925 | 294610 | 4910 |
| 3:10 | 1938 | 313250 | 5221 |
| 3:20 | 1950 | 332000 | 5533 |
| 3:30 | 1962 | 350890 | 5848 |
| 3:40 | 1975 | 369890 |
