Kureba kwepaipi yesimbi isina tsvina inonziwo kureba kwakakumbirwa nemushandisi kana kureba kwechibvumirano.Pane mitemo yakawanda yekureba kwekutumira mune yakatarwa:

A. Normal urefu (inozivikanwawo sehurefu husina-yakagadziriswa): Chero piipi yesimbi isina tsvina iyo yakareba iri mukati mehupamhi hwehurefu hwekutsanangurwa uye pasina chikumbiro chehurefu hwakatarwa inonzi yakajairika urefu.Semuyenzaniso, structural pombi tsanangudzo mitemo: inopisa-yakakungurutswa (yakakanya, yakawedzerwa) simbi pombi 3000mm ~ 12000mm;inotonhora inokweva (yakakungurutswa) simbi pombi 2000mm ~ 10500mm.

B. Kucheka-kusvika-kureba: Kucheka-kusvika-kureba kunofanira kunge kuri mukati meyero yenguva dzose yehurefu, iyo inokumbirwa muchibvumirano A yakatarwa urefu hurefu.Zvisinei, mukuita, hazvibviri kuve nechokwadi chokuti kureba-kureba kwakagadziriswa.Naizvozvo, iyo yakanaka yekukanganisa kukosha iyo yakatarwa-urefu hurefu hutongi hunobvumidzwa mune yakatarwa.

C. Kureba kwetsoka dzakawanda: Hurefu hwemakumbo akawanda hunofanira kuva mukati mechiyero chehurefu hwenguva dzose.Chibvumirano chinofanira kuratidza kureba kwetsoka imwe chete uye kuwanda kwehurefu hwakazara (somuenzaniso, 3000mm×3, iyo inova 3 multiples e3000mm, uye hurefu hwose i9000mm).Mukuita, kureba kwese kunofanirwa kuwedzerwa nekukanganisa kwakanaka kwe20mm, pamwe nekucheka muganhu kunofanira kusiiwa kune imwe neimwe yehurefu hwemutongi.Kutora pombi yezvimiro semuenzaniso, mutemo ndewokusiya chibvumirano chekucheka: dhayamita yekunze ≤159mm ndeye 5 ~ 10mm;kunze dhayamita> 159mm iri 10 ~ 15mm.

D. Chikero chakareba: urefu hwechiyero chepombi yesimbi isina tsvina iri mukati meyero yehurefu hwenguva dzose, apo mushandisi anoikumbira Kana humwe hurefu hwechiyero hwakagadziriswa, hucharatidzwa muchibvumirano.

Zvinogona kuonekwa kuti kureba kwechiyero kwakasununguka pane zvakagadziriswa-kureba uye kaviri-kureba zvinodiwa, asi zvakanyanya kusimba kupfuura urefu hwemazuva ose, izvo zvichaunzawo kuderera kwehuwandu hwegoho rekambani yekugadzira.Naizvozvo, zvine musoro kuti kambani yekugadzira ikwidze mutengo.Kuchinja kwekuwedzera kwemutengo kunowanzoita 4% yemutengo wepasi.