lhe visual perceptiveness of irregularitsr of a tile on tiled walls was in fluenced by 【 he extent of irregularity and the species of tiled walls ， 1凪 he former report ， we presented the quantitative value ( Rmax )correspolldillg to the magnitude of human sense on irregtimlty ． In this paper ， based on the reEati ⊂ ) nship between Rrnax， the species of tiledwalls and the psycho 且 ogical scale re 垣 t血 g tovisual perceptiveness ， we established another q し tiヒ ative value ( AD wl 亘ch indicated the visual perceptiveness of irregu rity ． AI consisted of Rmax ， the 且 ength ofthe t鍾e ， the width of thejo 血 t and the luminance of the tiie andjoint ． Keywords ： ti' ed − att ， accuracy ' offinishing ， evat "ation method ， irregu ' arity ， visuatpercePtivene ∬ ， quantitative va ' ue

Vibrations induced by multiple consecutive human footfalls on high stiffness long-span timber floor were measured and examine several performance values, the relationship between the measurements and human sensory evaluation. An experimental floor was built, on which the sensory tests were performed. It was revealed that walking vibrations induced by relatively high rather a consecutive long vibration at the natural frequency than stack of footfalls of each step.

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