GB/T 37825-2019 PDF EnglishUS$230.00 · In stock · Download in 9 seconds
GB/T 37825-2019: Test method for simulating wind pressure resistance of building glass under the uniform static loads Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 37825-2019: Test method for simulating wind pressure resistance of building glass under the uniform static loads---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT37825-2019 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 81.040.20 Q 33 Test method for simulating wind pressure resistance of building glass under the uniform static loads ISSUED ON: AUGUST 30, 2019 IMPLEMENTED ON: JULY 01, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 Test principle ... 5 5 Test device ... 5 6 Specimen requirements ... 6 7 Selection of proof load and number of glass specimens ... 7 8 Test steps ... 9 9 Test results ... 9 10 Test report ... 10 Appendix A (Normative) Installation of test frames and glass specimens ... 11 Test method for simulating wind pressure resistance of building glass under the uniform static loads1 ScopeThis standard specifies the terms and definitions of simulating wind pressure resistance of building glass, test principles, test equipment, specimen requirements, selection of proof load and number of glass specimens, test procedures, test results, test reports. This standard applies to the evaluation of simulating wind pressure resistance at room temperature for flat glass used in building doors, windows, and curtain walls, as well as film-coated glass, tempered glass, laminated glass, insulating glass made through deep processing.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 1216 External micrometer3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Coefficient of variation The ratio of the standard deviation of the damage load to the average damage load, which is used to indicate the degree of dispersion of the test value of damage load. 3.2 Equivalent design load The design wind pressure value as provided by the design department. strength and stiffness, to meet the requirements of not causing excessive deformation or damage during the test. At least one static pressure gauge on the test chamber is used to measure the air pressure in the chamber. The static pressure gauge shall be placed at the position that is least affected by air flow when measuring pressure. The air supply port shall be set properly so that the air flow cannot directly impact the glass specimen. The test chamber shall have a device that can adjust the size of the airflow and facilitate the observation of the deformation of the glass specimen. 5.3 Air supply system The air supply system includes controllable fans, compressed air sources, exhaust systems, reversible fans or other devices, which shall be able to control the load imposed on the glass specimen as required. 5.4 Pressure measuring device It can continuously and accurately record the air pressure in the test chamber with an accuracy of ± 2%. 5.5 Thermometer Measure the ambient temperature, with an accuracy of ± 0.5 °C. 5.6 Hygrometer Measure the relative humidity of the environment, with an accuracy of ± 2%. 5.7 Safety system The safety system shall ensure that when the glass is broken, it can protect the on-site inspection personnel and prevent the broken glass from splashing and hurting people.6 Specimen requirements6.1 Glass specimens shall be prepared by the same materials and processes as the finished product. Surface treatment, cutting and packaging of the specimens shall be representative of the actual condition of the glass being tested. 6.2 Before the test, the surface and edges of all glass specimens shall be visually inspected for burrs and scratches in accordance with the relevant product standards. If the glass specimens cannot meet the requirements of the corresponding product standard or are in doubt, the test cannot be performed. 6.3 During the transportation and installation process, the surface and edges ofAppendix A(Normative) Installation of test frames and glass specimens A.1 Test frame The test frame is composed of a structural support system and a glass assembly system. The test frame shall be able to support rectangular glass specimens; it shall be ensured that the glass specimens can bear the load perpendicular to its plane. A.2 Structural support system As shown in Figure A.1, the size tolerance of the long side α and the short side b of the structural support frame is ± 1.6 mm. The width of the edge protrusion of the channel steel used in the structural support system shall not be less than 44 mm. The schematic diagram is as shown in the A-A section in Figure A.1. The deformation of each component of the structural support system shall meet the following requirements: a) The maximum lateral displacement relative to the plane of the glass specimen shall not exceed L/750, wherein L is the length of the short side of the glass specimen; b) The maximum rotation angle of the frame shall not exceed 1°; c) The maximum in-plane deformation relative to the glass specimen shall not exceed L/2000; d) The four corners of the frame shall be fastened to minimize slippage or distortion during the test; e) The maximum deviation from the plane of the butt joints at the corners of the frame shall not exceed 0.4 mm, as shown in the schematic diagram of the A-A section in Figure A.1; f) The maximum in-plane warpage of the outer end surface of the frame shall not exceed 1.6 mm; g) The maximum deviation of the diagonal of the rectangular opening in the frame shall not exceed 3.2 mm; h) The frame shall ensure that the lateral deformation of the glass specimen is not hindered. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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