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Construction Theory Guides


Glaser Method

BS EN ISO 5250 states that designers of buildings should use the method described in BS EN ISO 13788 (the Glaser method) to assess the risk of interstitial condensation (condensation within the building fabric). This theory guide provides a detailed description of the Glaser method and includes numerous worked examples showing how it is used.

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Admittance Method

All building materials have thermal mass, which is the capacity to store heat. If the temperature in a building is fluctuating, then any part of the building fabric that has a large thermal mass will absorb or release heat to counter the fluctuations and maintain a uniform temperature. A dense material like concrete has a large thermal mass and designers of buildings often use this property as part of the heating and cooling strategy of the building. Designers use the admittance method to determine the precise response of a composite planar structure to temperature fluctuations on the two sides of the structure. This series of theory guides explains the theoretical basis of the admittance method and illustrates how it is used through numerous worked examples.

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