R per octave band in dB						in dB(A)
Material, Description	Thickness mm	Surface or mass in kg/m2	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	road traffic	rail traffic	Air traffic
Wood
Triplex	4	3.5	3	9	12	18	26	29	13.0	17	15
Chipboard (heavy), multiplex,	15	12	15	20	24	27	25	29	23	26	25
Blockboard
Pine	25	16	17	23	28	25	30	36	25	27	26
Walls
Float stone, 1/2 brick 2-sided stucco	110	110	28	32	33	36	45	50	35	37	36
Float stone, 1/1 brick 2-sided stucco	200	210	31	34	37	45	52	55	39
Limestone, e.d.:1/2 brick 2-sided stucco	120	210	31	35	40	46	55	55	40
Limestone, e.d.:1/1 brick 2-sided stucco	240	420	35	38	45	52	55	55	44
Concrete Stone (slightly porous), unplastered	100	180	25	27	25	26	30	40	27
concrete blocks, plastered	120	220	32	36	38	47	54	55	40
Concrete
Gravel Concrete, solid8 cm	80	180	30	33	35	45	52	55	37
Gravel Concrete, solid 15 cm	150	350	33	37	45	54	55	55	43
Gas concrete, solid 9 cm	90	75	25	30	30	32	37	45	31
Gas concrete, solid 15 cm	150	120	30	30	32	37	45	50	34
Metal
Aluminum, flat plate, thickness 4 mm	4	11	12	17	23	28	29	25	21
Steel, flat plate, thickness 1 mm	1	8	11	17	22	27	33	40	21
Steel, flat plate, thickness 3 mm	3	24	19	24	30	36	40	32	29
Steel, flat plate, thickness 0,7 mm	40	7	10	16	19	21	24	26	19
Steel, flat plate, thickness 1 mm	45	11	14	16	20	25	29	23	21
Glass
4 mm	4	10	19	23	26	30	32	28	26
8 mm	8	20	23	26	30	32	28	38	29
4 mm glass, 12 mm cavity, 6 mm glass	22	25	22	21	29	37	37	37	28
6 mm glass, 12 mm cavity, 6 mm glass	24	30	23	20	31	36	31	37	29
8 mm glass, 12 mm spouw, 5 mm glass	25	33	24	22	31	36	36	38	34.8
4 mm glass, 50 mm spouw, 8 mm glass	62	30	20	30	38	43	43	44	41.5
6 mm glass, 75 mm spouw, 6 mm glass	87	30	26	33	41	46	41	47	43.6
Diversen
Asbestos cement, flat	6	10	19	25	31	36	39	-	34.8
Asbestos cement, currugated	6.5	14	23	27	26	27	31	-	26.7
Polyester roofing sheets, currugated, translucent	3	3	4	5	8	11	-
Impact resistant plastic (eg application skylights)	4.5	5	9	15	21	27	33	39	32.0
Openings (d > f/2)	0	0	0	0	0	0	0	0
Masonry
Stony cavity wall with mineral wool	-	400	41	46	52	59	64	64	60.4
1/2-brick outer leaf, insulation, inner cavity leaf gas concrete (d = 100 mm, 650 kg/m2)	-	275	38	39	39	46	55	55	50.7
Glass bricks (d= 80 mm)	-	200	26	32	38	48	38	38	43.6
Facade constructions
Profiled steel (d = 0.7 mm), cavity completely filled with mineral wool (d = 90 mm, 40 kg/m3), steel (d = 1.0 mm)	-	19	18	27	37	40	42	45	40.4
Profiled steel (d = 0.7 mm), cavity completely filled with mineral wool (d = 90 mm, 40 kg/m3), perforated steel (11%, d = 0.7 mm)	-	16	13	18	29	35	37	40	35.3
Profiled steel  (d = 0,7 mm), cavity (d = 90 mm) partially  filled with mineral wool(d = 70 mm), perforated steel 1 1 % (d = 0, 7 mm	-	16	15	20	31	37	37	40	36.0
idem, non perforated steel	-	17	17	29	39	42	42	45	41.2
Profiled aluminum (d =0,7 mm), cavity completely filled with mineral wool (d =90 mm, 40 kg/m3 ), steel (d= 1,0 mm)	-	15	16	26	35	40	42	45	40.3
Profiled aluminum (d =0,7 mm), cavity completely filled with mineral wool (d =90 mm, 16 kg/m3 ), steel (d= 1,0 mm)	-	13	17	27	35	39	42	45	40.0
Stiff sandwichpanel, mineral wool core (d=50-85mm, 15Okglm')	-	20	23	22	17	33	43	>43	36.6
Stiff sandwichpanel, PS-foam core (d= 50-65 mm)	-	20	22	26	30	24	37	>37	30.8
Stiff sandwichpanel, PUR-foam core (d= 45-75 mm)	-	20	22	26	30	31	26	>30	27.8
Roof
Profiled steel (d =0,7 mm), mineral wool(d =60 mm, 10,5 kg/m3), roofing felt-layer (burned)l	-	24	21	27	34	37	44	55	46.7
Profiled steel, perforated 10% (d =0,7mm), mineral wool (d= 60 mm, 10,5 kg/m3'),  roofing felt-layer (burned)l	-	21	14	17	25	38	46	56	47.8
Woodchipped concrete panel 30 mm gravel	-	-	28	29	40	42	47	55	47.5
Wooden decking foam insulation 30 mm gravel	-	-	21	27	27	29	34	40	33.2