If you have a map A0 , the plotter is 84 cm , but the dimensions on site is 50*20 m , which max scale to this map ?

Remind: scale = drawing / reality

Then

reality 50m x 20 m

Format A0: 1189mm x 841mm

Plotter: 840 mm

scale H = 1189 / 50000 = 1/42 Scale H = 1/50

scale V = 841 / 20000 = 1/23 Scale V = 1/25

Max scale = 1/50