Japan Reinforced Concrete Structure Keeps High like Bubble Period

Japanese building construction floor space of reinforced concrete structure keeps higher level like bubble period in the beginning of 1990’s. Meanwhile, the space of steel frame structure decreased by 30% from fiscal 1990 at the ended of March 1991 and the space of steel frame and reinforced concrete structure decreased to one-seven of the space in fiscal 1990. Reinforced concrete structure increased because Japanese each rebar maker enhanced strength and expanded diameter of rebar. In Kanto area around Tokyo as Japanese biggest market, the space of reinforced concrete structure was at 20.8 million square meters in fiscal 1990 and keeps 20 million square meters for this several years like babble period. At the same time, the space of steel frame structure decreased to 20 million square meters from 34 million square meters and the space of steel frame and reinforced concrete structure decreased to 2-3 million square meters from 14 million square meters.Each general contractor is manhattanizing building such as mansion or office building for beneficial use of space. Reinforcing steel bar was cheaper than steel frame. Each rebar maker developed strong rebar for higher building. Building construction market decreased by near 30% from fiscal 1990. However, rebar presence is increasing.