Abstract
Our purpose was to establish a standard by which the number of elevators in office fuildings could be estimated. We selected for study about a hundred office buildings constructed during the past several years in Japan and investigated the situation of elevators. The results obtained are as follows; There is a : 1. Relationship between the number of elevators and the total floor area. 2. Relationship between the rate of the number of freight elevators for the number of total elevators and the total floor area. 3. Relationship between the number of elevators per 1, 000m^2 and the total floor area. 4. Relationship between the number of stories and the number of elevators per 1, 000m^2.