A proposal of explanatory material on performance grading for road traffic vibrations

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The research aim is to create an explanatory material for the decision of environmental vibration performance based on owner ’s social needs with consensus establishing between an owner and a structural engineer. With focusing on citizen’s opinion concerning performance grades, we carried out a questionnaire survey. We conducted a questionnaire and an experimentation of vibration which supposes vertical vibrations in house structure caused by traffic and daily winds at a time. As a result, the most effective factor to assess structural performance of a house is the people’s experience who felt vibrations daily. We found out the characteristics of awareness of people that concerns about house structural types.