Brandenburger Gate – Berlin
Builder: Carl Gotthard Langhans
Height: 26 m
Width: 65,5m
Depth: 11 m
Building Material: Sandstone
Type of Soiling: regular surface dirt, Graffiti, Mildew, Deposite
Cleaning Equipment: HDS 895, Columns: hot Water, 50 bar or 725 psi pressure, 75°C
Period of Cleaning: May–July/August 1990
