The demand for natural stones with natural beauty and appearance such as color,shades and pattern have been increasing along with the improvement in the quality of buildings.However the recent shortage of skilled personnel has caused a serious problem in stone craft and stone setting.There is a great need to develop new materials and setting method which are independent of the skills of stone work craftmen.This paper reprts a newly developed light weight composite panels obtained by combining thinly sliced natural stone with synthetic xonotlite panel, and describes its setting method.The properties of the panel compared with natural stones are summarized as follows.1) The weight of the newly developed composite panel is about 1/3 that of natural stone of the same size.2) Industrially-produced light weght composite panels show high quality.3) The synthetic xonotlite panel enables the humidity in the air to be controlled.4) The panel is non-combustible and contributes to the presentation of natural resources.The features of the setting method of the panel are as follows:1) It enables adoption of the dry installation method by using adequate anchors so that it is unnecessary to rely on masonry work.2) Partial repairs of the installed panels can be done easily and quickly by this method.3) The reliability of the setting method, together with the light weight of the panel, allows the panel size to be increased.

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This study examines the test methods and evaluations which were produced during a comparison of the performance vibration similar to that which would be felt by humans senses on full scale test floors.(1) The test floors of the existing and 2×4 system were used with a combination of each finishing (Tatami, carpet, flooring, andunfinished) over an area the size of 3600mm×3600mm, a specification used by Finance corporation.(2) As for the methods, vibration was similated by dropping a sand bag and tire (equivalent to a violent fall by an adult and childrens'jumping.) and through walking, running, and jumping.(3) As for the evaluation method, the values obtained from equation (1) are plotted on the performance evaluation chart(Fig.7)for wooden floors by referring to the evaluation data shown in Fig.6.Conclusions are draw from the area of the dots.From the results in this study,it was found that the vibration on wooden flors is determined by a combination of floor type,and that the influence from finishing materials is small.Future cosiderations could be the standardization of sensory values,simpler testing methods,and the development of test equipment which can evaluate the recent diversity of flooring commonly used.

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Investigations were done on which part of our body makes contact with what kind of materials for how long time in our daily life-space for in summer,1973 and in winter,1990.Having found out the tendency of the touching condition between the human body and matter in our general life,many date were obtained in designing many kinds of buikding elements and furnitures.

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