The treated fabric shall not continue to flame for more than one second after the burner is removed. The average length of char (for the standard cotton test fabric) shall not exceed three and one-half inches (3 1/2″). The maximum for any fabric shall not exceed 6 inches (6″).

Specimens shall be tested for fire resistance in accordance with the method outlined in Section 1237.1.

History

1. Amendment filed 11-10-60; effective thirtieth day thereafter (Register 60, No. 23).

2. Amendment filed 8-28-62; effective thirtieth day thereafter (Register 62, No. 18).