“Three sexes” of doors and windows
Date:2023/1/4 10:54:18 Hits:362
The physical performance of doors and windows mainly includes air permeability, rainwater leakage, wind pressure resistance, heat preservation, sound insulation, lighting performance 6 aspects. Among them, the latter three performance, is based on the specific needs of the room function to select and control; the first three performance is the basic building doors and windows of the three performance, commonly known as doors and windows“Three”. According to GBT7106-2008, exterior doors and windows of buildings are classified according to different performance indexes. Air-tightness index of doors and windows: the classification of air-tightness of doors and windows adopts the air permeability q 1 per unit length of opening seam and air permeability Q 2 per unit area when the pressure difference is 10 Pa under the standard condition as the grading index, divide the exterior doors and windows into 8 levels. Water-tightness index of doors and windows: the classification of water-tightness of doors and windows is to use the first pressure difference of the serious leakage pressure difference as the classification index, and to divide the exterior doors and windows of the building into 6 levels. Wind pressure index of doors and windows: the classification of the wind pressure performance of doors and windows is to use the level detection pressure difference p 3 as a classification index, the outside of the building doors and windows are divided into 9 levels. In addition, the building doors and windows in the air sound insulation performance, thermal insulation and lighting performance also have relevant standards and corresponding grading indicators. Therefore, in the selection of doors and windows,
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