GB/T 37825-2019 English PDF (GB/T37825-2019)

GB/T 37825-2019: Test method for simulating wind pressure resistance of building glass under the uniform static loads
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GB/T 37825-2019
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 Contents
Foreword ... 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 loads
1 Scope
This 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 references
The 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 micrometer
3 Terms and definitions
The 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 requirements
6.1 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 of
Appendix 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.
GB/T 37825-2019
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 Contents
Foreword ... 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 loads
1 Scope
This 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 references
The 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 micrometer
3 Terms and definitions
The 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 requirements
6.1 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 of
Appendix 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.