At the same time the building costs must not escalate to too high a level, since otherwise the advantages of specialisation will be more than outweighed by the increased depreciation in service.
Kwangaxeshanye amaxabiso okwakha makanganyuki kakhulu kumlinganiselo, ngenxa yokuba ngamanye amaxesha uncedo lobuchule liya kuba ngaphezulu kokodlulwa ngobunzima ngokunyuka kokuhla kwexabiso emsebenzini.