JA56 YEARBOOK2004 JAPANESE ARCHITECTURAL SCENE IN 2004 work Hiroshima City Naka Incineration Plant location Hiroshima, Hiroshima Prefecture architects Taniguchi and Associates structural engnieers Structural Design Group mechanical engineers   general contractor JV of Penta-Ocean Construction, Nissan Rinkai Construction, Nishiki, and Oonogi site area 50,245.47m2 building area 18,877.70m2 total floor area 45,518.83m2 structure steel frame, steel framed concrete, reinforced concrete, partly pre-cast concrete; 1 basement, 7 stories, and 1-story penthouse pricipal use incineration plant completion date February, 2004 next back top