Describes pressurization tests conducted by the National Testing Institute on 3 large industrial buildings. Sets out equipment and methods used including atracer gas method to calculate air flow through the fan rather than the usual measuring duct. Gives construction and volume details of buildings measured.

States that methods used by Swiss energy consultants in calculating air change rates are often inaccurate. Most consultants use the "observation method" utilising smoke pencils etc. and mistakes are made in calculating conditions causing air infiltration. Describes a new graphic method for estimating mean air change rates, which needs data on construction, pressurization values and window opening.

Describes tests to investigate the sealing qualities of Kleeneze brushstrip (a fibrous draught-proofing strip) and the frictional forces exerted by it as the brushstrip compression is varied.

Reports on some current projects in the UK using a certain type of CO2-controlled ventilation system, the "Builiding Breathaliser". This system has been installed in lecture theatres at the University of Kent, BHS department stores and cinemas owned by Rank leisure.

Grab sampling of a tracer gas/air mixture in conjunction with the tracer gas decay technique is a convenient method for conducting a survey of air infiltration rates in homes. Examines such a method, using SF6 as the tracer gas and storing the concentration in evacuated glass tubes.

A wind-tunnel model study of the experimental building at Aylesbury, England has been conducted at scales of of 1:25, 1:50 and 1:100. Compares model results with those obtained in other wind-tunnel studies and with full-scale values obtained by the Building Research Establishment at Aylesbury.

Describes a comprehensive investigation undertaken to determine the wind pressures on surfaces of models of typical low-rise buildings. For many practical applications building surfaces like facade coverings or tiled roofs are permeable. For those coverings the pressure equilibration across thepermeable surface is important when determining the net windload. Gives a survey of the physical parameters influencing the windload of permeable surface coverings. Presents results of a continuing study of the wind load on permeable facade coverings.

Tests a large office building, consisting of several octagonal towers and other blocks in a boundary layer wind tunnel. Determines the highest suction pressures which are relevant for the fixing of the cladding. Uses a tracer gas method to determine recirculation problems of the ventilation system inlets and outlets resulting from the arrangement of octagonal towers of different heights. Wind velocities on the flat roof of some towers are studied by meansof an erosion technique using flour, checks the accuracy of the method using hot wire measurements.

Discusses MEPA (Microcomputer Energy Programs for Architects) which has been developed in Sweden to supply energy analysis information during the early stages of design of residential and small commercial buildings, and is used inSweden, Kuwait and the US. It is designed especially for architects using microcomputers.