Delivery chiyero urefu hwekabhoni simbi pombi, inozivikanwawo sekuda kwemushandisi kureba kana kureba kwechibvumirano, pane zvina zvinopihwa mumazinga aripo:

A, Normal length(inozivikanwawo sekuti isiri-random kureba): chero kureba mukati mehurefu hwechiyero chinodiwa uye hapana yakatarwa hurefu hunodiwa hunowanzonzi hurefu hwakajairika.

B, Cheka kureba: kureba kwekucheka kunofanira kunge kuri mukati mehurefu hwenguva dzose, iyo inodiwa muchibvumirano chiyero chakatarwa chehurefu.Asi iyo chaiyo oparesheni inochekwa uye hazvigoneke, saka chiyero chinotsanangura kureba kwehurefu hwekutsauka kwakanaka kunobvumidzwa.Kugadzirwa kwakadzikira kureba kupfuura kureba kwechubhu kureba kwepombi kazhinji ndiko goho rakakura, vagadziri vakakurudzira kuwedzera kwemubhadharo kunonzwisisika.Mabhizinesi eMarkups haawirirane, kazhinji zvichienderana nekuwedzera kwemutengo we10%.

C, Hurefu hwakapetwa kaviri: zvinoenderana nezvinodiwa zvekurongeka, kureba ndiko kwakapetwa kaviri uye kunonzi kureba kaviri.hurefu hwakapetwa kaviri hunofanira kunge huri mukati mehurefu hwenguva dzose, kondirakiti inofanira kutsanangura hurefu huviri humwechete uye kuumbwa kwehurefu hwakazara huzhinji.Mukuita, kureba kwese kunofanirwa kunge kwakavakirwa pane inotenderwa kutsauka kwakanaka ne20mm, pamwe nehurefu hwakapetwa hwega hwega muganho wekuchekwa hunofanira kuramba.Kana chiyero chakatsauka chisina kureba kaviri uye kuchekwa kwemuganho zvinodiwa, zvinofanirwa kutaurirana nemapato ese uye zvichitsanangurwa muchibvumirano.Nguva dzakarebesa kureba hurefu hwakafanana nekugadzirwa kuchaunza kudzikiswa kukuru kwegoho, saka vagadziri vakurudzira kuwedzera kunonzwisisika, uye mwero wayo wekuwedzera nehurefu hwehuwandu hwekuwedzera hurefu hwakafanana.

D, Hurefu hweSikopu: kureba kwechikamu chiri mukati mehurefu hwakajairika, kana mushandisi akakumbira nhanho yakatarwa umo urefu hwenguva, hunoda kutaurwa muchibvumirano.