| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for improving prediction accuracy of a heavy floor impact sound level of a building in which a dry type double floor is installed. <P>SOLUTION: An impedance characteristic of a slab before installing the dry type double floor is calculated to calculate a heavy floor impact sound level in each hammering point of the slab. After finding out a prediction formula for predicting a reduction amount of a floor impact sound level after installing the dry type double floor from calculation values of a reduction amount of the heavy floor impact sound level measured by installing the dry type double floor in a wall type structure laboratory and an increase amount of the impedance level in each hammering point of the slab in the wall type structure laboratory, the heavy floor impact sound level of the building in which the dry type double floor is installed is predicted by using the heavy floor impact sound level in each hammering point of the slab before installing the dry type double floor and the prediction formula. <P>COPYRIGHT: (C)2013,JPO&INPIT |
