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BS EN ISO 9554:2010 pdf free download
HomeISO StandardsBS EN ISO 9554:2010 pdf free download
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BS EN ISO 9554:2010 pdf free download.Fibre ropes – General specifications (ISO 9554:2010).
4.2 Construction and structure
Unless otherwise specified, 3-. 4- and 6-strand laid ropes shall be Z-twist (nght-hand lay), their strands S-twist and their roping yams Z-twist.
The 8-strand braided ropes shall consist of four S-twist strands and four Z-twist strands arranged so that S-twist strands alternate (individually or in pairs) with Z-twist strands (individually or in pairs).
The 12-strand braided ropes shall consist of six S-twist strands and six Z-twist strands arranged so that S-twist strands alternate (individually or in pairs) with Z-twist strands (individually or in pairs).
A double-braided rope shall consist of a number of strands that are braided to form a core, around which additional strands are braided to form a sheath. The core lies coaxially within the sheath. The number of strands varies, based upon the size of the rope.
A parallel rope construction consists of a number of sub-ropes protected by a non-load-bearing cover.
Each strand shall consist of an equal number of rope yams sufficient to provide the characteristics specified in the International Standard for the relevant product. For ropes of reference number 36 or higher, the number of yams in each strand may differ by one yarn or ±2,5 % from the intended number of yarns in the strand.
The ropes and their strands shall be continuous, without splice for standard delivered lengths or shorter lengths.
Yams may be joined as necessary.
The strands can be assemb’ed yarns as well.
NOTE National legislations can place additional requirements concerning rope construction.
4.3 Treatment
4.3.1 Polyamide and polyester ropes
4.3.1.1 Polyamide and polyester laid ropes that are required to have a heat setting on the rope to ensure lay and dimensional stability are designated as type 1 ropes in ISO 1140 and ISO 1141.
4.3.1.2 In other cases, polyamide and polyester laid ropes that are not required to have a heat setting on the rope are designated as type 2 ropes in ISO 1140 and ISO 1141.BS EN ISO 9554 pdf free download.


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