Ishidi likathayela elicindezelwe (ishidi lophahla) libhekisela eshidini lensimbi elakhiwe ngokucindezela okubandayo noma ukugoqeka okubandayo. Ishidi lensimbi lenziwe ngeshidi lensimbi elinemibala, ishidi lensimbi, ishidi lensimbi engagqwali, ishidi le-aluminium, ishidi lensimbi evimbela ukubola noma elinye ishidi lensimbi elincanyana.
Ishidi lensimbi elinephrofayili linezici zesisindo esilula, amandla aphezulu, intengo ephansi, ukusebenza kahle kokuzamazama komhlaba, ukwakhiwa okusheshayo nokubukeka okuhle.
Insimbi ewuthayela iyimpahla yokwakha enhle, esetshenziselwa ikakhulukazi ukufulela indlu, ukwakha udonga, isitimela sokuqapha, phansi nezinye izakhiwo, njengesikhumulo sezindiza, isiteshi sesitimela, inkundla yezemidlalo, ihholo lekhonsathi, inkundla yemidlalo yaseshashalazini enkulu, njll. Ngokwezidingo ezahlukene zohlelo lokusebenza, ishidi lensimbi elinephrofayili lingacindezelwa libe uhlobo lwamagagasi, uhlobo lwe-T, uhlobo lwe-V, uhlobo lombambo nokunye okunjalo.