A-A-50435 Ropes (Aramid)This commercial item description covers four strand Aramid Fiber Rope which is intended for use as mooring lines and floating dry dock tending lines.

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A-A-50435B

2.1 ELONGATION. The total elongation of the rope shall not exceed six percent at the minimum breaking strength value of Table III. The load elongation curve, drawn autographically, shall not exhibit evidence of sudden changes in load applications greater than five percent of the load measured at the instant of change. Changes due to splice slippage shall not be considered in this determination.

2.2 FAILURE MECHANISM. The failure mechanism shall consist of sequential rupturing of the individual strands.

2.3 LAY LENGTH. The lay length shall not exceed the values in table III.

3. IDENTIFICATION MARKER. The manufacturer shall identify each product by inserting a water resistant marker inside one strand in all sizes of ropes. The manufacturer’s name, the year of manufacture, and type of fiber (aramid) shall be printed on the marker in bold, easy-to-read type. Italic or script type shall not be used. The printing shall not be affected by exposure to salt water or mineral oil.

4. IDENTIFICATION TAG. In addition to the requirements specified in 3, each package unit shall have a ticket (identification tag) attached for identification purposes.  The ticket shall be legibly printed, stamped: or typed with water insoluble ink. The ticket shall contain the following information:

a. stock number

b. nomenclature

c. CID number

d. length

e. contract number and date

f. date of manufacture and year

g. contractor’s name

5. SPLICEABILITY. The finished rope shall be spliceable and shall not develop yarn displacement or strand cockles (distortion formed by back twist in the strand).

6. PUT UP. Unless otherwise specified, the rope shall be provided in standard lengths of between 183 meters (600 feet) and 201 meters (660 feet) when measured in the relaxed condition and shall be furnished without knots or splices on nonreturnable reels not larger than 2 meters (7 feet) in diameter. Multiple lengths shall be permitted but no piece shall be less than 183 meters (600 feet).