Because of the large breadth the structure required for ensuring adequate transverse strength increases very rapidly, so that beyond this limit there is only a slight drop in the building costs per ton deadweight.
Ngenxa yomthwalo omkhulu kubumi bokuqinisekisa amandla anqamlezayo ngokukhawulezileyo kwenzela ukuba ngaphaya komda kukho kuphela ukuhla okungephi kumaxabiso okwakha ngetoni