British Standards Relevant to Agriculture

British Standard Summaries

BS5502: Part 42: 1990
Building and Structures for Agriculture
Code of Practice for design & construction of Pig Buildings

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 Standard aims to give recommendations for the design and construction of buildings to be used for pigs. For full details see BSI standard. The following text outlines the salient points:


  • Consider carefully the requirements given in the Code of recommendations for the welfare of domestic pigs.
  • All buildings must be designed to avoid discomfort, distress or injury to pigs.
  • They must be free from projections, edges or perforations that could cause damage to them.
  • Lying areas must always be kept dry and dunging areas must be drained.
  • Good floor design is very important. It should be kept dry and dunging areas in particular should be drained effectively.

The building

  • Floors must meet specific guidelines for design, cleaning, disinfecting and meet imposed loadings.
  • Materials used must be resistant to vermin, humid conditions, damage by cleaning and disinfection, or fumigation.
  • All surfaces which may come in contact with the pig must be protected against gnawing and rooting.
  • Adequate insulation must be provided to ensure a comfortable temperature. Specific guidelines are given in the full standard.
  • Walls should normally be built with a damp-proof course.
  • Ventilation and air speeds must meet specific guidelines given in the full standard and within BS5502:52.
  • Alarm systems must be linked to the ventilation system and temperature control.
  • Hazardous gases from wastes must be controlled.
  • Heating systems must be designed to avoid the build-up of high levels of exhaust gases inside the building.
  • Attention should be paid to fire risks. Install alarm systems.
  • Lighting should be supplied to meet specified standards. Illumination cycles are important. Sufficient light for inspection at all times should be available.
  • Dimensions of the building and space should be determined by the needs of the stock and the persons and machines needed to care for them. Minimum requirements are specified in the full standard.

Ancillary facilities

  • A farrowing crate or other means of protecting piglets should be provided.
  • Specific conditions must be met for pregnant or dry sows in stalls or cubicles.
  • Specific conditions must be met for boar and service pens.
  • Isolation accommodation should be sited away from healthy stock and must meet other specific conditions.
  • Electricity, water and drainage should be installed to meet specific standards.
  • Secure storage for any chemicals should be provided.
  • Fire precautions, safety signs and notices should be in accordance with specific guidelines.

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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