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 8,200 lb
7/16"1/2"9/16"

General rigging and lifting

Correctly made, full bury · 100% efficiency

Safe working load

1,640lb

7.3 kN · 1 short ton

Minimum break strength
8,200 lb
÷ design factor 5:1
1,640 lb
× termination 100%
1,640 lb
× bend factor 100%
1,640 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.

Canopy-241/2"Double Braid