Perforated brick, 250 x 125 x 50 mm, glazed, 17% perforation ratio

PTB reference data

Original description

Material properties

Thickness: 50 mm

Wall distance: 25 mm

Perforation: 17%

Surface: glazed

ISO 354 – reverberation chamber

αw

0.13

αp nach ISO 11654

250 Hz

0.05

500 Hz

0.15

1000 Hz

0.20

2000 Hz

0.15

4000 Hz

0.10

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Method (354): Measured