Skip to content
Ropebraiders
Engineering tools

Working loadcalculator

Break strength is not working load. Design factor, termination, bend radius and sling angle all sit between the two — this shows each one's contribution rather than hiding them behind a single number.
MBS 11,000 lb
1/4"9/16"1-1/4"

General rigging and lifting

Correctly made, full bury · 100% efficiency

Safe working load

2,200lb

9.8 kN · 1 short ton

Minimum break strength
11,000 lb
÷ design factor 5:1
2,200 lb
× termination 100%
2,200 lb
× bend factor 100%
2,200 lb

Indicative only. Not a substitute for a rigging plan signed by a competent person, and it does not account for shock loading, dynamic amplification, temperature, chemical exposure or rope condition in service.

Meridian-DB9/16"Double Braid