JA61 Kazuhiro Kojima + Kazuko Akamatsu / CAt work The Great Egyptian Museum location Egypt spricipal use museum site area 480,000m2 total floor area 86,200m2 structure steel frame scale in building 4 stories, 3 basement maximum height 30,500mm architects Kazuhiro Kojima + Kojima Lab., Tokyo University of Science, C+A structural engineers Oak Structural Design Office next back top