# The Town and Country Planning General Development Order 1988, Paragraph A.3: Interpretation of Class A


(1) For the purposes of paragraph A.1 floorspace shall be calculated by external measurement and without taking account of the floorspace in any pier or satellite.
(2) Development falls within this paragraph if—
(a) it is urgently required for the efficient running of the airport, and
(b) it consists of the carrying out of works, or the erection or construction of a structure or of an ancillary building, or the placing on land of equipment, and the works, structure, building, or equipment do not exceed 4 metres in height or 200 cubic metres in capacity.

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Source: https://www.legislation.gov.uk/uksi/1988/1813/schedule/2/part/18/chapter/1/paragraph/A.3 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-development-order-1988/schedule-2/part-18/chapter-1/paragraph-A.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.