Detail of GB/T 7106-2019

Introduction of GB/T 7106-2019

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 7106-2008 Graduations and test methods of air permeability, watertightness wind load resistance performance for building external windows and doors and the following main technical changes have been made with respect to GB/T 7106-2008: —— the definition of serious leakage is deleted (see Sub-clause 3.4.1 of Edition 2008); the definition of simulating static pressure box method is added (see Sub-clause 3.8 hereof); —— the grading of air permeability, watertightness and wind load resistance performance is deleted (see Clause 4 of Edition 2008); ——the schematic diagram of test device is adjusted (see Sub-clause 5.1; Sub-clause 5.1 of Edition 2008); ——the test sequence of grade test and engineering test is modified (see Sub-clauses 6.5.1 and 6.5.2 hereof; Sub-clause 6.4 of Edition 2008); ——the air permeability performance is tested by collective box, and the pressure sequence of the grade test of air permeability performance is adjusted (see Sub-clause 7.1.1 hereof; Sub-clause 7.1 in Edition 2008); ——the engineering test and judging method for air permeability performance is added (see Sub-clauses 7.1.2 and 7.4.2 hereof); ——the amount of water leached from engineering tests on watertightness performance is adjusted (see Sub-clause 8.3.2 hereof; Sub-clause 8.3 in Edition 2008); ——the judgment method for test results of watertightness performance is modified (see Sub-clause 8.5 hereof; Sub-clause 8.5 of Edition 2008); ——the wind load standard value test and wind load design value test for wind load resistance performance are added (see Sub-clauses 9.2.6 and 9.2.7 hereof); ——the clauses for repeated air permeability and watertightness performance tests are added (see Clauses 10 and 11 hereof); ——linear regression calculation method is added (see Annex C hereto). This standard was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee on Pumps of Standardization Administration of China (SAC/TC 448). The previous editions of this standard are as follows: ——GB/T 7106-1986, GB/T 7106-2002, GB/T 7106-2008; ——GB/T 7107-1986, GB/T 7107-2002; ——GB/T 7108-1986, GB/T 7108-2002; ——GB/T 13685-1992; ——GB/T 13686-1992. Test methods of air permeability, watertightness, wind load resistance performance for building external windows and doors 1 Scope This standard specifies the terms and definitions, test principle, test device and test preparation of air permeability, watertightness and wind load resistance performance of building external windows and doors, air permeability performance test, watertightness test, wind load resistance performance test, repeated air permeability performance test, repeated watertightness performance test and test reports. This standard is applicable to the laboratory test of air permeability, watertightness and wind load resistance performance of building external windows and doors. The test objects are only restricted to windows and doors or windows and doors with attached frames, and do not involve the joint parts between the windows and doors and other structures such as building walls. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5823 Terminology for building windows and doors GB/T 31433 General specification for building curtain walls, windows and doors GB 50009 Load code for the design of building structures GB 50178 Standard of climatic regionalization for architecture 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 5823 and the following apply. 3.1 external windows and doors the general term of external windows and doors of buildings 3.2 pressure difference the difference between the absolute air pressures on the interior and external surfaces of the external windows and doors Note: When the pressure on the outdoor surface is higher than that on the indoor surface, the pressure difference is positive; on the contrary, it is negative. 3.3 air permeability performance the ability of external windows and doors to prevent air permeability when the openable part is normally locked 3.3.1 standard condition test conditions with an air temperature of 293K (20℃), an atmospheric pressure of 101.3 kPa (760 mmHg), and an air density of 1.202 kg/m3 3.3.2 volume of air leakage the volume of air passing through the test body per unit time 3.3.3 volume of extraneous air leakage the volume of air leakage other than the volume of air leakage of external windows and doors themselves in the measuring area of the collective box 3.3.4 total volume of air leakage the sum of the volume of air leakage through the external windows and doors themselves and the volume of extraneous air leakage 3.3.5 collective box fastened box a box body connected with the opening of the pressure box and used for collecting and measuring the volume of air leakage and volume of extraneous air leakage permeating into or leaking out of the external windows and doors 3.3.6 openable joint length the sum of the lengths of the interior joints of the openable parts on external windows and doors Note: The measured value of indoor surface shall prevail. 3.3.7 volume of air flow through the unit joint length of the opening part volume of air flow through the unit joint length of the opening part under standard condition 3.3.8 area of specimen the area within the outer side of the frames of external windows and doors Note: The measured value of indoor surface shall prevail. 3.3.9 volume of air flow through a unit area volume of air flow through a unit area of external windows and doors under standard condition 3.4 watertightness performance the ability of external windows and doors to prevent rainwater leakage under the simultaneous effect of wind and rain when the openable part is normally locked 3.4.1 water leakage the phenomenon that the rainwater seeps into the inner interface of external windows and doors, wetting the parts that shall not be wetted in the design 3.4.2 volume of water spray the volume of water sprayed to per unit area of the outdoor surface of the external windows and doors per unit time 3.5 wind load resistance performance the ability of external windows and doors not to distort over the allowable value and be damaged or malfunctioned under the effect of wind pressure when the openable part is normally locked Note 1: Distortion of external windows and doors includes that of stressed bars and panels. Note 2: Damage includes cracks, panel damage, connection damage, bond damage, window sash falling or being opened, and observable irreversible deformation, etc. Note 3: Malfunction includes loosening of hardware, difficulty in opening and closing, peeling of adhesive tape, etc. 3.5.1 frontal displacement the linear displacement of any point on the surface of stress bar or panel of the external windows and doors along the frontal line 3.5.2 frontal deflection the maximum difference of the linear displacement of a certain point on the surface of the stressed bar or panel of external windows and doors 3.5.3 relative frontal deflection ratio of frontal deflection to distance l between measuring points at both ends 3.5.4 allowable deflection allowable relative frontal deflection the limit value of the relative frontal deflection of the main component in the normal use limit state (symbol: f0) 3.5.5 distortion test the test to determine the pressure difference (symbol: P1 or P'1) of the main components when the distortion is 40% of the allowable deflection 3.5.6 repeated pressure test the test to determine whether the main components are damaged or malfunctioned under the repeated action of the pressure difference (symbol P2 or P'2) when the distortion is 60% of the allowable deflection 3.6 grade test the test to determine the performance level of external windows and doors 3.7 engineering test the test to determine whether the performance of external windows and doors meets the requirements of engineering design 3.8 simulating static pressure box method the method to continuously inflate or pump air into the pressure box using air supply system to maintain the specified stable pressure difference inside and outside the external windows and doors or to fluctuate the pressure difference according to a certain cycle 4 Test principle The test on air permeability performance, watertightness performance and wind load resistance performance of the specimen installed on the pressure box is conducted with the simulating static pressure box method Test on air permeability performance is to collect and measure the volume of air leakage of the specimen through the collective box under the condition of stable pressure difference. Test on watertightness performance means that under the action of stable pressure difference or fluctuating pressure difference, water is sprayed to the outdoor side of the specimen at the same time to measure the ability of the specimen not to leak water. Test on wind load resistance performance is to measure the ability of the specimen not to distort allowable distortion value under the action of characteristic value of wind load and the ability of the specimen to resist damage and dysfunction under the action of design value of wind load.

Contents of GB/T 7106-2019

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Test principle 5 Test device 6 Test preparation 7 Test for air permeability performance 8 Test for watertightness performance 9 Test for wind load resistance performance 10 Test for repeated air permeability performance 11 Test for repeated watertightness performance 12 Test report Annex A (Normative) Calibration method for air flow measuring device Annex B (Normative) Calibration method for water-spraying device Annex C (Informative) Linear regression calculation method Annex D (Informative) Example of test report