Calculate the tear strength, Ts, in kilonewtons per meter of thickness, by the formula: Ts 5 F/d (1) Where: F = the maximum force, in N, for Types A, B or C. For Type T and CP tests, F is the peak, valley, mean or median force obtained from the recording or autographic trace, in N (See 11.3), and d = the median thickness of each test piece, in mm.