Ipayipi elingunxande luhlobo lwesigaba esiyisikwele esingenalutho esikhanyayo esinepayipi lensimbi elincanyana, elaziwa nangokuthi isigaba sokugoba esiqandisini. Kuyinsimbi yesigaba enomumo oyisikwele oyisikwele kanye nosayizi owenziwe ngomugqa ogoqekayo oshisayo noma ogoqelwe ngokubanda noma ikhoyili njengento eyisisekelo, eyakhiwe ngokugoba okubandayo bese kuba ukushisela okunemvamisa ephezulu. Ngaphandle kokuqina kodonga olukhuphukile, usayizi wekhona kanye nokucaba konqenqema kweshubhu yesikwele esishisiwe esigqinqiwe ngokungeziwe kufinyelela noma kudlule izinga lokumelana elishiselwe ishubhu lesikwele elakheke ngokubanda. Ukuhlukaniswa kwamapayipi angama-rectangular: amapayipi ensimbi ahlukaniswe abe amapayipi ensimbi angenamthungo namapayipi ensimbi ashiselwe (amapayipi athungelwe) amapayipi ayisikwele agingqiwe ashisayo angenamthungo, amapayipi ayisikwele adonswa abandayo angenamthungo, amapayipi ayisikwele akhishiwe, namapayipi ayisikwele ashiselwe.