1. Ubude obungenasiphelo (ubude obuqhelekileyo)
Imibhobho yentsimbi engenamthungo egalelwe umthungo ngokuqhelekileyo iyahluka ngobude, ebizwa ngokuba bubude obungenammiselo ngaphakathi komgangatho womgangatho. Ubude obungenasiphelo bukwabizwa ngokuba ngubude obuqhelekileyo (ngerula). Umzekelo, ubude be-159 * 4.5umbhobho wentsimbi engenamthungongokuqhelekileyo yi-8 ~ 12.5

2. Ubude obuzinzileyo
Ukusika kwisayizi emiselweyo ngokweemfuno zomyalelo kuthiwa bubude obusisigxina. Xa uhambisa ngokuhambelana nobude obusisigxina, umbhobho wensimbi ongenamthungo kufuneka ube nobude obuchazwe ngumthengi kwisivumelwano somyalelo. Ngokomzekelo, ukuba ikhontrakthi ichaza ukuba ukuhanjiswa kusekelwe kubude obusisigxina be-6m, izinto ezihanjiswayo kufuneka zibe yi-6m ubude. Nantoni na emfutshane kune-6m okanye ubude kune-6m ayinakufaneleka. Kodwa ngokwenene, akunakwenzeka ukuba ukuhanjiswa kube yi-6m ubude, ngoko ke kuchazwe ukuba ukuphambuka okulungileyo kuvunyelwe, kodwa ukuphambuka okungalunganga akuvumelekanga. (Xa ubude obumiselweyo bungaphantsi kwe-6m, ukutenxa okuvumelekileyo kwandiswe ukuya kwi-+30mm; xa ubude obumiselweyo bukhulu kune-6m, ukutenxa okuvumelekileyo kwandiswe ukuya ku-+50mm)

Amaxesha ama-3
Ubungakanani obumiselweyo obunqunyulwayo buziphindaphinda ezidityanisiweyo ngokweemfuno zeodolo kuthiwa yirula ephindwe kabini. Xa kuziswa ngobude obuninzi, ubude bombhobho wentsimbi engenamthungo ofakiweyo kufuneka bube yinani elipheleleyo lobude (okuthiwa bubude obunye) obuchazwe kwikhontrakthi yoku-odola ngumthengi (kunye nesaha cut). Umzekelo, umthengi ufuna irula enye ubude be-2m kwikhontrakthi yoku-odola, ngoko ubude bube yi-4m xa sisikwa kwirula ephindwe kabini, kunye ne-6m xa sisikwa kwirula emithathu, kunye nokusikwa esinye okanye ezimbini ngokulandelelanayo. .
Ubungakanani besarha cut ichazwe kumgangatho. Xa irula ephindwe kabini ihanjiswa, ukutenxa okuhle kuphela kuvunyelwe, kwaye ukutenxa okungalunganga akuvumelekanga.

4. Irula emfutshane
Ubude bungaphantsi komda osezantsi wobude obungenammiselo obuchazwe ngumgangatho, kodwa bungekho ngaphantsi kobude obufutshane obuvumelekileyo bubizwa ngokuba bubude obufutshane. Ngokomzekelo, umgangatho wepayipi yensimbi yokuthutha ulwelo uchaza ukuba i-10% (ibalwe ngokwenani) yeepayipi zetsimbi ezinobude obufutshane kunye nobude be-2-4m zivunyelwe kwibhetshi nganye. I-4m ngumda ongaphantsi wobude obungenasiphelo, kwaye ubude obufutshane obuvunyelwe yi-2m.