Solid brick masonry with open butt joints

PTB reference data

Original description

Material properties

Thickness: 100 mm

Wall distance: 30 mm

Dimensions: 207 x 100 x 55 mm

Perforation: 7 %

ISO 354 – reverberation chamber

αw

0.33

αp nach ISO 11654

125 Hz

0.15

250 Hz

0.35

500 Hz

0.30

1000 Hz

0.30

2000 Hz

0.45

4000 Hz

0.45

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Method (354): Measured