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Weather testing of timber - discoloration
2001 - IRG/WP 01-20221
The brightness and color saturation of the timber were reduced over time. The perception of an increasingly dark color in the timber over time is due to the gradual reduction in brightness. The period from May to September was characterized by the greatest discoloration of all three periods of the year. Because this period has the largest number of sunlight hours, and the timber is subjected to a ...
T Toyoda, M Azuma, Y Hikita


Survey of maintenance management of a residence
2001 - IRG/WP 01-10405
The following points were clarified from the responses to the questionnaire. Termite damage was most common in the bathroom, washroom, and entrance, in that order. Termite damage was most commonly found beneath floors, followed by floor surfaces, and inside walls, in that order. Damage in framing was minimal. Damage in all structural components was most common in the Kyushu region, with the most s...
Y Yamaguchi, M Azuma, Y Hikita, K Nishimoto