To estimate the strength of rope which is well worn but in good condition, apply the formula as for new rope, but use the actual and not the nominal circumference.
Ulinganiselo lwamandla ale ntambo alulo uncedo olulungileyo kodwa ikumgangatho olungileyo (sebenzisa, fomula) "ukuze intambo le intsha" kodwa kusebenze le kanye, hayi le inobude obujikelezayo lonto.