Uhlelo luhlinzeka ngesihlabathi esikhiqiziwe nezinto ezihlanganisiwe zokwakhiwa kwemigwaqo emikhulu. Njengoba kudingeka inani elikhulu le-concrete elisezingeni eliphezulu ohlelweni lokwakhiwa kwamabhuloho, unit yokwakha ayinendaba enkulu kuphela ngesihlabathi esikhiqiziwe, kodwa iphinde idinge qualitiy ephezulu yaso. Nokho, indlela yokwenziwa kwesihlabathi yesiko inezinkinga eziningi ezinjengokuthi i-modulus enkulu yokunethezeka, ukungcoliswa kukadust okuphezulu, indawo enkulu eyindlalifa, nokunye. Ngakho-ke, umthengi wanquma ukusebenzisa uhlelo lokusebenza lwe-VU lokulungisa izinto ukuze axazulule lezi zinkinga. Ngemva kokuthi uhlelo luvele lwakhiwe, ibhizinisi liye labamba kahle futhi umkhiqizo uqhubeke uzinzile, okulethele izinzuzo ezinkulu zezezimali kumthengi.
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