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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