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By J. Singh

Biodeterioration is the commonest challenge of mankind and its checklist should be traced again to biblical instances or most likely past. construction Mycology offers with the learn of fungi in and round the development surroundings, having direct and oblique impact at the future health of the construction, its fabrics, buildings and occupants.

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Additional resources for Building Mycology: Management of decay and health in buildings

Example text

Environmental reactions and ill health associated with buildings are so variable that it is difficult to establish whether symptoms are caused by a specific factor. Large concentrations of fungal spores in a building, particularly when known to cause serious health effects, for example Aspergillus flavus, A. , etc. should be considered a potential hazard. The measurement of moisture, relative humidity, microventilation and salt content can lead to the assessment of decay activity. The data acquired from these observations combined with the level and extent of fungal activity and knowledge of building design and construction can be used to monitor and predict the risk of structural decay.

The wild S. 4 Dry-rot-decayed wood— cuboidal cracking. , 1993a, 1993b). This fungus was originally isolated from the Indian Himalayas in 1947 and 1954 by Bagchee (1954). 5 Dry rot fruit body discovered in the Himalayas. Nature and extent of deterioration in buildings due to fungi 37 In Denmark, a number of other fungi related to the dry rot fungus occur in houses. These include Serpula himantioides (thin-fleshed dry rot fungus), Leucogyrophana pinastri (spiny dry rot fungus), L. pulverulenta (small dry rot fungus), L.

NATURAL VENTILATION Natural ventilation provides the gentlest form of air movement throughout the building fabric and is one of the best ways of avoiding condensation and the development of fungi. It can be provided by airbricks, air ventilators, open windows, roof ventilators, ventilators in the structural floor voids and dry lining systems. The extent of natural ventilation is affected by size of opening, wind speed and direction, cross ventilation and buoyancy. External weather conditions, particularly wind speed and direction, will affect air change rates within a building, especially when windows and doors are open.

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