Izinqwaba zamashidi zisetshenziswa ezakhiweni zokugcina umhlaba lapho kuzosungulwa izinga elihlukile lendawo.Inqwaba yeshidi yakha isixhumi esibonakalayo esiqondile.

Izinqwaba zamashidi ensimbi zisetshenziselwa kokubili izindonga zokugcina zesikhashana nezihlala unomphela.Izakhiwo zifaka amagumbi angaphansi, izindawo zokupaka izimoto ezingaphansi komhlaba kanye nama-abutments amabhuloho ahlanganisa namabhuloho abalulekile.

Izinzuzo Zomkhiqizo:

I-1.Ngomthamo oqinile wokuthwala kanye nesakhiwo sokukhanya, udonga oluqhubekayo olwakhiwe izinqwaba zeshidi lensimbi lunamandla amakhulu nokuqina.

I-2.Ukuqina kwamanzi okuhle, inhlanganisela yokukhiya yenqwaba yeshidi lensimbi ixhumeke eduze, engavimbela ukuphuma kwamanzi ngokwemvelo.

I-3.Ukwakhiwa kulula, kungakwazi ukuzivumelanisa nezimo ezihlukahlukene ze-geological kanye nekhwalithi yenhlabathi, kunganciphisa umthamo wokumba womgodi wesisekelo, ukusebenza kuthatha indawo encane.

4.Ukuqina okuhle, kuye ngomehluko endaweni yokusetshenziswa, impilo ingaba yiminyaka engama-50.

5.Ukwakhiwa kuhambisana nemvelo, futhi inani lenhlabathi ethathwe kanye nokhonkolo osetshenzisiwe liyancipha kakhulu, elingavikela ngempumelelo imithombo yomhlaba.

6.Ukusebenza okusebenzayo, okulungele kakhulu ukuqaliswa okusheshayo kokulawulwa kwezikhukhula, ukuwa, isihlabathi esisheshayo, ukuzamazama komhlaba nokunye ukusiza nokuvimbela izinhlekelele.

7.Izinto ezisetshenziswayo zingaphinda zisetshenziswe ukuze zisetshenziswe ngokuphindaphindiwe, futhi zingasetshenziswa kabusha izikhathi ezingu-20-30 kumaphrojekthi wesikhashana.

8. Uma kuqhathaniswa nezinye izakhiwo ze-monomer, udonga lulula futhi lukwazi ukuguquguquka okukhulu, okulungele ukuvimbela nokwelashwa kwezinhlekelele ezihlukahlukene ze-geological.