By H W Harrison, R C de Vekey
This 3rd publication within the BRE construction parts sequence considers the most vertical components of structures, either exterior (including partitions, home windows and doorways) and inner (including isolating partitions, walls and inner doors). It bargains in define with the functionality standards of the areas from which the mandatory performances of the partitions are derived, and in addition, in precept, with the completed performances and deficiencies of the material over the total age variety of the nationwide development inventory. This e-book is addressed essentially to development surveyors and different execs appearing comparable services, comparable to architects and developers, who continue, fix, expand and renew the nationwide construction inventory. it's going to additionally locate program within the schooling box, the place teachers can locate indication of the place the development syllabus wishes recognition. information are given of BRE Advisory carrier investigations of partitions via form of illness and through kind of development.
Read or Download BRE Building Elements: Walls, windows and doors - Performance, diagnosis, maintenance, repair and avoidance of defects PDF
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Extra resources for BRE Building Elements: Walls, windows and doors - Performance, diagnosis, maintenance, repair and avoidance of defects
20 on page 28) and the latter is useful for assessing the risk of rain penetration through masonry walls and building features(35). Design guidance in the UK on the incidence of driving rain has been calculated since the early 1960s from rainfall and all-directional wind speed measurements. 21 (on page 29). This map has been taken from Roofs and roofing (24). Work by the Meteorological Office on indices of wind-driven rain, or ‘driving rain’, has overcome some of the deficiencies of earlier approaches.
Such pointing should be removed. It is preferable not to point over the edge of a dampproof course, but if it must be done, a mastic should be used ● renderings that have been taken down below DPC level ● internal plaster, occurring for example when a suspended timber floor has been replaced by a concrete floor, and measures taken to link the underfloor dampproof membrane with the dampproof course in the wall have been inadequate Even when the cause of the bypassing has been removed, the damp conditions will not disappear if hygroscopic salts have been brought up the wall by the rising moisture.
This is because of the probability of rain penetration through cracks or joints. BS 8200(28) When window draughts are complained of by building occupants, it is natural for them to assume that leakage is occurring around opening lights. However, cold radiation through the glass of even well-sealed single glazed windows can cause cold down-draughts of air chilled by the glass. This effect provokes complaints about windows being draughty when they are in fact adequately sealed. Diffusion of water vapour and vapour pressure The diffusion of water vapour through external walls can help to reduce internal vapour pressures slightly – the construction is said to ‘breathe’.
BRE Building Elements: Walls, windows and doors - Performance, diagnosis, maintenance, repair and avoidance of defects by H W Harrison, R C de Vekey