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11/105 cofrac

CSTB Ie futur en construction TEST REPORT N° AC14-26051052/3 -S~

PRACTICAL SOUND ABSORPTION COEFFICIENT a p

OF SUSPENDED CEILING PANELS

REQUESTER, MANUFACTURER SAINT GOBAIN ECOPHON

NAME Focus A 20 mm

FITNESS FOR PURPOSE Unchecked

=:ESSAIS

Test 2 Date 16/05/14

AA45 Station ALPHA

STANDARDS EN ISO 354, EN ISO 11654, prEN 16487

CONFIGURATION 200 mm overall depth of construction

MAIN CHARACTERISTICS MEASUREMENT CONDITIONS

Dimensions in mm : 2960 x 3550 Empty room: Area in m2 : 10.5 Thickness in mm : 20

Temperature: lS.0oC Relative humidity: 60%

Mass per unit area in kg/m 2: 1.5 Mounting type : E-200

RESULTS

f

1,0 I I I I t I I I

-----~---- ------ -- ---- ----~-- -------- ---- ------~---- - ------ ~ -----125

I I I I

: : :: 0,8 I I , I t I

: : : : : : 250 -----t---- -----:-----------: -----------t -----------t -----------t -----

: : : : : : 0,6 I I I I I

500 I I I I I I I I I I

- - - - - - - - - - - - - - -t" - - - - - - - - -- -1""- - - - - - - - - - -,. - - - - - - - -- --,. - - - -- - -- - - -,. - - - --I I I I I I I I I I I I I I I 0,4 I I I I I I

I I I I I I

1000 I I I I I I -----i -----------,-----------1-----------r-----------r-----------r -----

0,2 I I I I I I

2000

-----r -----------r-----------r -----------r -----------t --CSTB -- 4000 0,0

I I I I I . '

Hz

Room with sample: Temperature: 19.0oC Relative humidity: 55%

Op

0,50

0,90

1,00

0,90

1,00

1,00

Ow= 1,00 classement / class: A

It is strongly recommended to use this single number rating in combination with the complete sound absorption coefficient curve.

Tramecofrac.dot, rev 11 du 12/02/14 R14-26051052-3.doc