A FUNDAMENTAL STUDY ON SNOW LOAD EVALUATION CONSIDERING UNCAUGHT RAINFALL BY SURVEY OF CONDITIONS AT WEATHER OBSERVATION STATIONS

Abstract

In February 2014, some large-scale buildings around Tokyo were collapsed or damaged by heavy snow. For light-snow region, using amount of rainfall instead of ground snow depth is recommended to estimate ground snow weight. However, wind influences the amount of rainfall caught by gauges. In this paper, three factors are reported. 1) Survey of conditions at weather observation stations. 2) Analysis of difference between AIJ Recommendations for Loads on Buildings and this survey on conditions of estimating wind speed. 3) Estimation ground snow depth and weight based on this survey. Through this survey, strong effect of wind speed is elucidated.