| SPECIFICATION |
BS
REQUIREMENTS |
RESULT |
METHOD |
|
MEAN ORIGINAL THICKNESS FROM NOMINAL THICKNESS |
Maximum
12% |
7.5% |
|
|
DIFFERENCE BETWEEN MAX./ MIN. ORIGINAL THICKNESSES |
Maximum
3mm |
0.4
mm |
|
BREAKING
STRENGTH
Warp
Weft |
Minimum
40N |
745 N
360 N |
BS
2576 |
EXTENSION UNDER FORCE
Warp
Weft |
Maximum
10% @ 40N |
2.1%
1.7% |
BS
2576 |
|
WORK OF COMPRESSION |
Min.
50 J/mē after dynamic loading for 1000 impacts |
97
J/mē |
BS
4098
& BS 4052 |
| COMPRESSION
AFTER DYNAMIC LOADING |
Minimum
2mm, maximum 7mm after 1000 impacts |
5.4mm |
BS
4098
& BS 4052 |
|
RETENTION OF WORK OF COMPRESSION |
Min.
40% of original after dynamic loading for 1000 impacts |
50% |
BS
4098
& BS 4052 |
| LOSS
IN THICKNESS AFTER DYNAMIC LOADING |
Max.
15% after 1000 impacts |
8.6% |
BS
4052 |
| LOSS
IN THICKNESS AFTER STATIC LOADING |
Max.
15% after 24 hrs recovery |
9.4% |
BS
4939 |
| RESISTANCE
TO CRACKING |
Not
greater than 50mm |
Pass |
BS
5808 |
| ODOUR |
No
objectionable odour |
Pass |
BS
5808 |
| END
OF CLASSIFICATION |
GD/U |
BS
5808 |