MIL-PRF-24699A (SH)
3.3.2 Quantity of pieces per roll (type I). The quantity of pieces per roll shall not exceed the values in
Table II.
TABLE II. Quantity of pieces per roll (type I).
Maximum quantity of
Class
pieces per roll
1
3
2
3
3
2
3.3.3 Size of panels (type II). Type II barrier material shall be fabricated in panels which shall be 3 feet
by 4 feet or 3 feet by 8 feet or as specified (see 6.2).
3.3.4 Tolerance. The tolerance for dimensions of type I and type II barrier material shall not exceed plus
or minus 1/4 inch.
3.4 Surface density and weight.
3.4.1 Surface density. Nominal values for surface density shall not exceed the values shown in Table III.
The surface density of individual samples may vary within a tolerance of plus or minus 10 percent of the nominal
density.
TABLE III. Nominal surface density.
Nominal surface density (lb/ft2)
Type I, class 1
Type I, class 2 Type I, class 3
Type II
0.75
1.0
1.5
1.0
3.4.2 Weight of rolls (type I). The weight per roll shall be 100 pounds plus or minus 10 percent.
3.5 Breaking force. Breaking force shall be as specified in Table IV.
TABLE IV. Minimum breaking force.
Warp breaking force (lb/in)
Fill breaking force (lb/in)
Type I
400
300
Type II
400
300
3.6 Tearing strength (type I only). Minimum tearing strength shall be as specified in Table V.
TABLE V. Tearing strength.
Warp tear strength (lb)
Fill tear strength (lb)
Type I
50
40
3.6.1 Rivet and grommet load bearing strength. Load bearing strength shall be not less than the values
specified in Table VI.
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