ONORM EN 20140-9:1993被替代
Acoustics - Measurement Of Sound Insulation In Buildings And Of Building Elements - Laboratory Measurements Of Room-to-room Airborne Sound Insulation Of A Suspended Ceiling With A Plenum Suspended Above It
出版：Osterreichisches Normungsinstitut
专家解读视频
Gives a laboratory method of measuring the airborne sound insulation of a suspended ceiling with a plenum of defined height mounted above an acoustical barrier which separates two rooms of a specified test facility and simulates a pair of horizontally adjacent, typical rooms sharing a common suspended ceiling system, plenum space and a dividing wall. May be extended to include study of composite ceiling systems with other components such as luminaires and ventilating systems and auxiliary systems, such as material used either as plenum barriers or as backing for the ceiling. Includes example of a test procedure, illustrates cross section and plan of the test facility. ALSO NUMBERED AS BS 2750: PART 9: 1987
NF EN 20140-9:1994 - Identical
I.S. EN 20140-9:1994 - Identical
ISO 140-9:1985 - Identical
BS EN 20140-9:1994 - Identical
NBN EN 20140-9:1995 - Identical
UNI EN 20140-9:1998 - Identical
UNE EN 20140-9:1995 - Identical
SS EN 20140-9 Ed. 1 (1994) - Identical
SN EN 20140-9:1993 - Identical
DIN EN 20140-9 (1993-12) - Identical
