Standard plate weighs only 16 kg/m2, which is equivalent to 6mm thick glass and only 1/5 of same thickness stone weight.
Ipuleti elijwayelekile linesisindo esingu-16 kg / m2 kuphela, elilingana nengilazi engu-6mm futhi ingu-1/5 kuphela wesisindo setshe elifanayo.