Discusses some problems of interpretation of the French regulations concerning domestic ventilation promulgated 24th March 1982. Notes in particular problems connected with natural ventilation.
Notes initial airtightness requirements in SBN 1980 and discusses various forms of ventilation. Discusses how tightness testing can reveal location and magnitude of leaks. Gives theoretical method of calculating air leakage flow and relates this to practical measurement. Considers different alternatives such as pressurising the building and combining tightness testing with thermography. Discusses 1980 building regulations and what buildings ought to be tested. Lists critical points of a building and measures which can contribute to good airtightness.
In future, high altitude correction factors will be considered in computing the ventilation heat load in high rise buildings. The algorithms necessary for the calculation are deducted and stated by the author.
Reports measurements on air transport through homes made by a committee working a Dutch Standard on Heating Load Calculation similar to DIN 4701, but taking account of air infiltration losses through joints and cracks between glazing, window-frame and facade construction. Describes the measuring method applied. Tables air leakage coefficients c and flow exponents, n ,of a number of flats and single family houses. Also tables c and n values of cracks according to type of construction and material, use of weather strips and measuring institute.
Describes wind tunnel study where both static and dynamic, local and spatially distributed loads have been measured for a variety of representative low-rise building geometries. Determines experimental pressure coefficients for the interior of buildings with various porosities and wall openings. Describes the assumptions made to reduce the large quantities of data to a small set of simplified pressure coefficient charts appropriate for use in a code or standard.
The ventilation recommendations set out by the British Standards Institute Code of Practice, the Building Research Station Advisory Papers, and CIBS are outlined.
The structural design of glasshouses must provide for safety from wind damage while permitting maximum light transmission to the crop. A literature review of codes of practice, recommendations and data concerning wind loads on buildings showed several different procedures for describing the wind speed near the ground and predicting design pressures on low profile buildings.
Presents a proposal for an Indoor Climate Standard, to be included in the building codes of the nordic countries. The standard comprises two parts: 1) air quality and ventilation, 2) thermal environment. The paper presents and discusses the main features of the two parts of the standard. Mechanical ventilation is required in all buildings including dwellings at a minimum outdoor air change of 0.5/h. Limits for operative temperature and for thermal non-uniformity are given for winter and summer conditions.
During the period 1973-76, measurements in housing where particle board is used as a building material have revealed a reduction in the formaldehyde content of the indoor atmosphere from 0.64 to 0.40 mg/cu.m. under standard indoor climatic conditions. A corresponding although slighter reduction in therelease of formaldehyde from particle board was found under controlled conditions in climatic chambers. Suggests these improvements in the quality of particle board will suffice to fulfill the proposed limit of 0.40 mg/cu.m.
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