Umsebenzi wokuqala kaVSI sokwenza isandla kukwakha kwe-concrete enobunkunzi bakhona kumfundiso omkhulu. Ngokucinezela iqadi elibomvu ukuba liyisandla esiqinisekileyo, sesheshayo, le ndlela ikhiqiza i-aggregate ethuthwayo eyayisebenza kakhulu ubunzima be-concrete, ukusebenzisa kanye nebophelo. Lokhu kuyakho kumongo wekhetho yezinhlangano ezibalulekileyo njengezihlalo, ukugcina kwezimali, i-concrete epholile yokuphelele, nezinto zokuvikela eziphathekayo, apho ubumfihlelo obubangelene kanye nobunzima obungcono ababoni ngabo.
Ngaphandle kwekofa yekhanda, umsebenzi wokwenza amanzi ase-VSI usebenzisa izinkampani ezithile zezinhlelo zokuphatha nokwakha. Isiphumo esihlukahlukene sikhona kakhulu ekwakheni kwemvula, esingakanani ngaphakathi kwayo kanye nokukhathazeka kwayo. Kuyisisekelo esibalulekile ekwakheni kwebhuluku nezimbondo eziphephile, lapho iqiniso elahlekile likunika ukungabi nalutho olungajwayelekile okungakhi maphakathi. Ngaphezu koko, leli nhlangothi elenzelwe lingcono ekwakheni kwezikofa ezizakhiwe khona, ukugcina phansi kwezimali, futhi njengesisekelo sezibuko ze-railway ballast, libonisa ubume bempilo lwalo kuzintsho zonke.
Ukuthembeka kusetintela, ukwenza kwe-sand ye-VSI kusenelisa isisombululo esivuselelwayo ngokusebenzisa iqonga le-quarry yasekhaya noma izibuko ezivuselelwe ze-construction, ekuphazamiseni ukusebenzisa iqonga lelalango elibangelwa ngokubhinya kwe-river sand. Lokhu kube lula ukudala izicathulo ezithile eziphathekayo, kusukela emakhanda ase-golf nezilima zimfushane zemvelo kuya kuzintonga zokuhlenga nezokucaca. Ngokuguqula izindlela zokwakha kuqhina okuphathelene nokuthile, ukwenza kwe-sand ye-VSI kuyisisekelo ekuthuthukisweni kokuphatha kanye nokuphatha ngendlela ethembekileyo yezimali zomphakathi ngaphandle.