Directive 2000/14/EC of the European Parliament and of the Council of 8 May 2000 on the approximation of the laws of the Member States relating to the noise emission in the environment by equipment for use outdoors (c. 14)

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ANNEX III U.K. METHOD OF MEASUREMENT OF AIRBORNE NOISE EMITTED BY EQUIPMENT FOR USE OUTDOORS

PART B NOISE TEST CODES FOR SPECIFIC EQUIPMENT

28. HYDRAULIC HAMMERS U.K.

Operating conditions during tests U.K.

Period of observation/determination of resulting sound power level U.K.

The period of observation shall be at least 15 seconds

The measurements are repeated three times, or more if necessary. The final result is calculated as the arithmetic mean of the two highest values that do not differ by more than 1dB

Figure 28.1

Figure 28.2

Definitions U.K.

d	Tool diameter (mm)
d 1	Anvil diameter, 1 200 ± 100 mm
d 2	Inner diameter of the anvil support structure, ≤ 1 800 mm
d 3	Diameter of the test block deck, ≤ 2 200 mm
d 4	Diameter of the tool opening in the deck, ≤ 350 mm
d 5	Diameter of the tool seal, ≤ 1 000 mm
h 1	Visible tool length between the lowest part of the housing and tool seal upper surface (mm), h 1 = d ± d/2
h 2	Tool seal thickness above the deck, ≤ 20 mm (if the tool seal is located below the deck, its thickness is not limited; it may be made of foam rubber)
h 3	Distance between deck upper surface and anvil upper surface, 250 ± 50 mm
h 4	Isolating foam rubber deck seal thickness, ≤ 30 mm
h 5	Anvil thickness, 350 ± 50 mm
h 6	Tool penetration, ≤ 50 mm

If the quadratic shape of the test block structure is used, the maximum length dimension equals 0,89 × corresponding diameter

The empty space between the deck and the anvil can be filled with elastic foam rubber or other absorption material, density < 220 kg/m³