... [JWEIA 93 (2005) 341–360], J. Wind Eng. Ind. Aerodyn., 95, 137-143, 2007. Towards Better Evaluation of Design Wind Speed of Vietnam Le Truong Giang PhD Candidate, WERC, Tokyo Polytechnic ... wind mechanisms in term of return period (R-year) [8] building after 1960. Another example of evaluation for terrain roughness in Fukuoka (Japan) meteorological station for WNW directions in ... annual maximum wind speed and building volume in Japan (Tamura et al., 1989[11]) Fig. 4. Evaluation for terrain roughness in Fukuoka Meteor. stations (1961-2000) [1] V IV III...