To study snowdrift formation around buildings, wind-tunnel experiments were carried out, using activated clay particles to simulate snow, on a 1/500 scale model of a housing area at HANAKAWA. The similarity of snowdrift between the model and the actual prototype was obtained precisely when the tunnel wind-speed and the wind duration were 6.0 m/s and 1.0 hours, respectively. This modeling technique using activated clay particles is proved to be useful for further studies on the most appropriate shape and block planning to prevent snowdrift.

View full abstract

The porpose of this paper is to clarify the capasity of materialization for the system of sliding down the snow from a roof by the force of gravity at the heavy snow area.
There are very diversities of it, for example, 50-83% from the building-to-land ratio, 8-17% from the relation of the open space and the length of a roof, 10-90% from the pitch of a roof. Therefore for generalize the system, we need to consider some counterplans for avoid the troubles oath other.
If we take nice counterplans, it will be able to more and more generalize the system ata town or village in a heavy snow area.

View full abstract