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)

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

PART B NOISE TEST CODES FOR SPECIFIC EQUIPMENT

53. TOWER CRANES U.K.

Basic noise emission standard U.K.

Measurement surface/number of microphone positions/measuring distance U.K.

Measurements carried out at jib-height U.K.

Where the lifting mechanism is located at the jib-height, the measurement surface shall be a sphere of 4 m radius, the centre of which shall coincide with the geometrical centre of the winch

Where the measurement is carried out with the lifting mechanism on the jib stay of the crane, the area of measurement surface is a sphere; S is equal to 200 m²

The microphone positions shall be as follows (see figure 53.1):

Four microphone positions on a horizontal plane passing through the geometric centre of the mechanism (H = h/2)

with L = 2,80 m

and d = 2,80 - l/2

L = half-distance between two consecutive microphone positions

l = length of mechanism (along axis of jib)

b = width of mechanism

h = height of mechanism

d = distance between microphone support and mechanism in direction of jib

The other two microphone positions shall be located at the points of intersection of the sphere and the vertical line passing through the geometric centre of the mechanism