standard

Defines the method to be used for the air permeability testing of windows to be fitted in exterior walls and supplied in the form of completely assembled and finished units. Describes apparatus, test method and expression of results.

With increased concern for energy conservation, many new standards have been developed. Discusses these standards which are of three types, prescriptive, component performance and performance. Outlines several design approaches toreducing air infiltration.

Compares some existing performance requirements for air permeability and water-tightness of windows. Gives tables showing main European standards. Finds that a large variety of methods of test and grading systems is used and concludes that steps should be taken to unify the systems.

Presents code of practice which supersedes CP3:chapter 1(c):1950. Deals with ventilation of buildings for human occupation. Outlines main reasons for provision of ventilation and gives recommended quantitative air flowrates. Shows that these form the basis for air supply recommendations for different types of buildings, and rooms characterised by usage. Gives basis for choice between natural and mechanical ventilation. Provides guidance on design of natural ventilation systems. chapter headings are: General, General principles of ventilation, natural ventilation, appendices.

Reports a programme of tests of the resistance of windows to air and water penetration. These were intended to assess the variation in the results due to different designs of window, differences between individual windows of the same type, different pressure test boxes, and different test operators. Gives tables of results and finds considerable variation but no single source of the variation. Suggests new test procedure and a statistical criterion for acceptance.

Describes investigation of the effects of five hour exposure of sixteen young people to different concentrations of formaldehyde. Physiological parameters, subjective discomfort and performance were monitored. Discusses setting of exposure standards for formaldehyde and suggests standard of 0.15 mg/m^3 for continuous exposure.< Discussion includes an account by R.Baars of developments in the Netherlands and measures taken to reduce formaldehyde concentrations in dwellings.

Gives regulations and performance guidelines for the ventilation of buildings. Includes guidelines for air quality and gives recommended supply and return air volumes for different rooms of a building.

This is a revision of the original standard, published 1959.

Gives standard test method for air leakage of joints between components used in the exterior walls of buildings. Outlines basic apparatus and test method. Resistance to air penetration shall be recorded expressed as cubic metres of air per hour.