Isetyenziselwa ukulinganisa amandla afunekayo ukuze kukhutshwe i-tuft enye okanye i-loop kwikhaphethi, oko kukuthi, amandla okubopha phakathi kwenqwaba yekhaphethi kunye nomqolo.
BS 5229: 1975 (1996);–Indlela yokufumanisa amandla okurhoxiswa kwe-tuft kwiikhaphethi
Indlela yovavanyo lwe-QB/T 1090-2019 ye-carpet tuft force yokurhoxisa amandla
Indlela yoVavanyo oluQhelekileyo lwe-ASTM D1335 yokuBopha uLuhlu lweeNgqubo zoMgangatho wePile
I-ISO 1949 – Iikhaphethi – Ukuzimisela kwamandla okurhoxisa i-tuftwithdrawal