Yanke maɓalli Sake haɗawa Hanyar bango mai zurfi (TRD a takaice) ya bambanta da hanyar bangon ƙasa mai gauraya (SMW). Tare da hanyar TRD, ana ɗora kayan aikin sarkar a kan wani dogon sashe na rectangular "yanke post" kuma a saka shi cikin ƙasa, za a motsa shi ta hanyar yankewa da zubar da ruwa, haɗuwa, tayar da hankali, da ƙarfafa ƙasa a wurin asali, don haka yi bangon diaphragm karkashin kasa.