Abstract
This report, as part 2 of our study, proposes an approximate equation to calculate the construction period of reinforced distribution facilities, such as shopping centers and warehouses having basement. 1) We derived this equation from multiple regression analysis by the total floor area, the basement floors and the ground floors of a building as the explanatory variable. 2) The character of this equation is rectilinear on the logarithmic coordinates. 3) We have confirmed the reliability of this equation by a statistical test, for example, Akaike's Information Criterion. Some equations and software to calculate construction period are made public and can be accessed on the internet, however, there is no report of testing the reliability of the results.