Large machines is utilised because a minimum of the 1st century BC when The traditional Roman engineer Vitruvius explained a crane in De architectura when it had been driven via human or animal labor. Sesuai namanya, risiko yang dihadapi alat berat saat dioperasikan juga tak kalah berat. Berdasarkan pengalaman, kecelakaan https://alwepo14443.tinyblogging.com/little-known-facts-about-alat-berat-60699035