﻿ Calculation of Basic impedance level for calculation of heavy weight floor-impact sound level：Homogeneous-single panel-void slab with circle hollow air space # Calculation of Basic impedance level for calculation of heavy weight floor-impact sound level：Homogeneous-single panel-void slab with circle hollow air space

 1 Density of member：ρ kg/m^3 - 2 Thickness of floor slab：h1 m - 3 Young's modules of member：E *10^10 N/m^2 - 4 Diameter of circle：φ m - 5 Interval of void：a m - 6 Graph x-axis：h1(m),y-axis：Lzb(dB) x-axis：φ(m),y-axis：Lzb(dB) x-axis：a(m),y-axis：Lzb(dB) Plot Input Data： YesNo , Figure： OnOff You need to upgrade your Flash Player
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## LaTex ## Keyword

Basic impedance level for calculation of heavy weight floor-impact sound level,Diameter of circle,Interval of void,Homogeneous- single panel-void slab with circle hollow air space,Bending Rigidity,Equivalent thickness of floor slab, impedance calculation,Density of member,Thickness of floor slab,Young's modules of member,Second moment of area

## Reference

：日本建築学会：『建物の床衝撃音防止設計』,技報堂,pp.11-39,2009.

## Remarks

・Basic impedance level(dB)：Lzb
・Basic impedance(kg/s)：Zb
・Equivalent thickness of floor slab(m)：h
・Density of member(kg/m^3)：ρ
・Thickness of floor slab(m)：h1
・Young's modules of member(N/m^2)：E
・Second moment of area(m^4)：I
・Bending Rigidity(Nm^2)：B
・Diameter of circle(m)：φ
・Interval of void(m)：a
・Equivalent thickness is calculated as Poisson's ratio is zero.
・Making Equation Image is powered by CODECOGS

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