British Standards Relevant to Agriculture

British Standard Summaries

BS5502: Part 60: 1992
Building and Structures for Agriculture.
Design and Construction of Buildings for Mushrooms.

The text herein is not a a full reproduction of the British Standard. It is summary based upon interpretation of the original text and not intended as a replacement for the full text. It should be used for general guidance only.

BS5502 is sub-divided into a number of individual standards. These can be broadly broken down as follows:

  • Part 0: Introduction
  • Parts 10 - 19: Reference information
  • Parts 20 - 39: General designs
  • Parts 40 - 59: Livestock buildings
  • Parts 60 - 79: Crop buildings
  • Parts 80 - 99: Ancillary buildings

This part of BS5502 gives recommendations for the design and construction of buildings used for the cultivation of mushrooms. Part 60 covers all nine stages of mushroom growing:

  1. Compost preparation
  2. Tray filling
  3. Pasteurisation
  4. Inoculation
  5. Spawn running
  6. Casing
  7. Growing
  8. Harvesting
  9. Sterilisation.


  • Consideration should be given to the siting of the building. In particular gently sloping sites are helpful to aid natural drainage. You should also consider access, location of services and the potential for future expansion.
  • Foundations, supports, floors and structures should be capable of taking the maximum potential loadings.
  • Internal materials should be selected to allow frequent sterilisation.
  • Materials and treatments should not impart odour or taint on the crop.
  • Walls to compost yards are not normally required.
  • Roofs to compost yards may provide weather protection.
  • Walls and roofs of buildings used for production should contain a vapour check and be smooth to aid cleaning with a pressure washer.
  • Insulation should be provided throughout production buildings.
  • Size of compost yard and production buildings should be decided by the size of the operation.


  • Heating will be required which can maintain air temperature at 15-18 dec C in growing rooms and 21-27 deg C in spawn running rooms.
  • Steam supplies will be required for pasteurisation and sterilisation.
  • Good ventilation will be necessary.
  • Natural light should be excluded in production buildings.
  • Electricity supplies will be required.
  • Water used for processing should be potable
  • Provisions for dealing with effluent may be necessary.
  • Protection against infestations will be necessary in accordance with BS5502:30.
  • Fire precautions will be required in accordance with BS5502:23.

A British Standard nor this summary does not, necessarily, include all the necessary information for correct implementation of the Standard to any specific application. This is purely the responsibility of the user. Standards are updated by either amendment or revision. Users should ensure that they are using the latest version.

The full text of this Standard can be obtained from the British Standard Institution

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