Berlin, Germany

Brandenburg Gate

Builder: Carl Gotthard Langhans
Built: 1788–1791

Building Material:
Sandstone

Type of Soiling:
regualr surface dirt, graffiti, mildew deposits

Cleaning Equipment:
HDS 895
Columns: hot water, 50bar or 725psi pressure at 75ºC or 167ºF

Duration:
May–August 1990
close window