Paper (In Japanese)
THE HISTORICAL CHANGES OF CONSTRUCTION CONTRACTS AND COST ESTIMATES OF THE RAILWAY CONSTRUCTION
2011 Volume 67 Issue 1 Pages 63-73
Details
2011 Volume 67 Issue 1 Pages 63-73
Japan Railway has opened in Oc tober 1872 between Shinbashi and Yokohama. Since then, the contract system has been adopted in order to bui ld up the railway network concurrently. Construction contracts and cost estimates in Japan has been unquestionably developed as the top runner in the railway construction. Therefore, this paper tried to el ucidate the historical changes and cost estimates of the railway construction.
In conclusion, this paper enabled us to reveal the fact that is divided into three developmental stages.
a)"Early period" has not been formalized of the c onstruction contracts and construction specifications.
b)"Growth period" is a unified and standardized st age of the construction contracts and construction specifications.
c)"Maturation period" is an established stage that th e combination estimated cons truction cost price, the method of construction cost estimates a nd the productivity per unit of work.
