◉Amathreyi ekhebulaziyizingxenye ezibalulekile ekufakweni kukagesi ezihlinzeka ngendlela ehlelekile yezintambo futhi zigcine ziphephile futhi zihlelekile. Asetshenziswa kakhulu kuzilungiselelo zezentengiselwano, zezimboni, nezindawo zokuhlala ukuze zisekele futhi zivikele izinhlelo zezintambo. Ukuqonda izinhlobo ezahlukene zamathreyi ekhebula kungakusiza ukhethe ithreyi lekhebula elilungile lohlelo oluthile. Nazi izinhlobo ezintathu eziyinhloko zamathreyi ekhebula:

◉1. Ithreyi yeCable ye-Trapezoidal: Amathreyi ekhebula e-Trapezoidal abonakala ngesakhiwo sawo se-trapezoidal esihlanganisa ojantshi ababili abasemaceleni abaxhunywe i-crosspiece. Lo mklamo uvumela ukungena komoya okuhle kakhulu kanye nokukhishwa kokushisa, okuwenza alungele ukuphathwa kwekhebula eliphezulu. Amathreyi e-Trapezoidal afaneleka ngokukhethekile ezindaweni lapho izintambo zikhiqiza ukushisa okukhulu, njengoba umklamo ovulekile uvimbela ukushisa. Zivame ukusetshenziswa ezindaweni zezimboni, izikhungo zedatha, nezindawo zokuxhumana ngocingo.

◉2. Izansi EliqinileIthreyi Lekhebula: Amathreyi ekhebula aphansi aqinile anesisekelo esiqinile esinikeza indawo eyisicaba yokubeka ikhebula. Lolu hlobo lwethreyi lusiza ukuvikela izintambo othulini, udoti, kanye nomswakama, okulenza libe lilungele izindawo lapho lezi zici zikhathaza khona. Amathreyi aphansi aqinile avame ukusetshenziswa ezakhiweni zezentengiselwano lapho ubuhle nokuvikelwa kubalulekile. Angakwazi futhi ukusekela izintambo ezisindayo futhi atholakala ezintweni ezihlukahlukene, kuhlanganise nensimbi ne-fiberglass.

◉3.Ithreyi Lekhebula Elinezimbobo: Amathreyi ekhebula anezimbobo ahlanganisa izinzuzo zawo womabili amathreyi esitebhisi namathileyi aphansi aqinile. Anesisekelo esiqinile esinama-perforations avumela ukungena komoya ngenkathi enikeza ukuvikeleka okuthile kwezintambo. Lolu hlobo lwethreyi luguquguquka kakhulu futhi lungasetshenziswa ezinhlotsheni ezihlukahlukene kusukela kwezimboni kuya kwezohwebo. Izimbobo zisiza futhi ukunamathiselwa kwezibopho zekhebula nezinye izesekeli, okwenza kube lula ukuvikela izintambo endaweni.

◉Kafushane, ukukhetha uhlobo lwethreyi yekhebula efanele (i-trapezoidal, iphansi eliqinile, noma elinembobo) kuncike ezidingweni ezithile zokufakwa, okuhlanganisa uhlobo lwekhebula, izimo zemvelo, nokucatshangelwa kobuhle. Ukuqonda lezi zinketho kungaholela kusixazululo esisebenza kahle nesiphephile sokuphatha ikhebula.