Recommended D/d ratio is 8:1.
No blanket working load recommendation can be made because it depends on the application and conditions of use, especially potential danger to personnel. It is recommended that the user establish working loads and safety factors based on professional and experienced assessments of risks.
The working load is a guideline for the use of a rope in good condition for non-critical applications and should be reduced where life, limb, or valuable property are involved, or for exceptional service such as shock, sustained loading, severe vibration, etc. The Cordage Institute specifies that the Safe Working Load of a rope shall be determined by dividing the Minimum Tensile Strength by the Safety Factor. Safety factors range from 5 to 12 for non-critical uses.
New England Ropes has developed special urethane coating techniques that can greatly improve rope performance. Coatings can be flexible or rigid. They can provide extra protection against abrasion, and provide color coding, for size and phase identification. Coating can be over a continuous length or applied to selected areas
T-900 Double Braid Ropes are made to rigid strength and weight standards. They are guaranteed to be free of manufacturing defects. Sample lots are continually tested in the Company’s Laboratory; and Certificates of Compliance are available on request.
New England Ropes can design constructions to meet specific requirements by engineering special rope geometry. In addition, fabricated units can be provided including thimbles, splices, integral chafe sleeves, etc. Contact Customer Service for details.