The layout Ford of Germanya#39;s parts and accessories depot in Merkenich, a suburb of Koln, was one of industrya#39;s post-World War ll asuperplantsaquot;: mammoth structures enclosing ... The structure The building was constructed in 1962, with another section added in 1967, and covered about 1, 370, 000 ... Diagram 1 shows the position of a cavity-brick wall that separated east and west sections of the building. ... The majority were rated at 165AdF (74AdC); the remainder at 212 Ad F (100Ad C).