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The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992
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- 1992 No. 168
- SCHEDULE 3
- PART 1
- ANNEX A
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ANNEX AARTIFICIAL FLOORING
1. DIMENSIONS AND MATERIALS
1.
1.1 Dimensions
The artificial flooring shall have a size of 360 × 360 cm.
1.2 Materials
The artificial flooring is composed of a cover of absorptive material of which the absorption coefficients α, measured in accordance with ISO 354 first edition, 1985-02-01, are within the limits given in the following table:
| Frequency/Hz | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α minimum | 0.00 | 0.20 | 0.40 | 0.60 | 0.70 | 0.80 |
| α maximum | 0.20 | 0.40 | 0.60 | 0.80 | 0.90 | 1.00 |
Note:
An example of a material and construction which can be expected to fulfil these requirements is given in Annex B.
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