1.0.1 This specification is established in order to realize safety and reliability, economy and rationality as well as practicability and aesthetics of architectural glass in building engineering.
1.0.2 This specification is applicable to the design and installation of architectural glass.
1.0.3 The design and installation of architectural glass shall not only meet this specification, but also comply with those in the current relevant ones of the nation.
2 Terms
2.0.1 Architectural glass
A general term for the glass used for buildings.
2.0.2 Strength on center area of glass
The breaking strength of center area of glass where the load is vertical to glass plate.
2.0.3 Strength on border area of glass
The breaking strength of border area of glass where the load is vertical to glass plate.
2.0.4 Strength on edge of glass
The tensile strength of edge of glass where the load is vertical to glass section.
2.0.5 Single glass
A general term for flat glass, coated glass, tinted glass, heat-strengthened glass, tempered glass, etc.
2.0.6 Framed glazing
The glazing with all edges continuously enveloped by supporting components with sufficient rigidity.
2.0.7 Free edge of glass
The edge of glass not enveloped by supporting members with sufficient rigidity.
2.0.8 Facing glass in room
The architectural facing glass fixed on the indoor wall.
2.0.9 Roof glass
The glass installed on building roof with the included angle from the horizontal plane less than or equal to 75°.
2.0.10 Floor and stairway glazing
The glass used as floor, including the glass used for glass floor, glass passage and glass stair tread.
2.0.11 U glass wall
The wall composed of U glass.
2.0.12 Front clearance
The distance between the outside surface of glass and the front vertical plane of the batten or groove.
2.0.13 Back clearance
The distance between the inside surface of glass and the back vertical plane of the groove.
2.0.14 Edge clearance
The distance between the border area of glass and the bottom surface of groove.
2.0.15 Edge cover
The distance between the border area of glass and the visible line.
3 Basic Requirements
3.1 Loads and Their Effects
3.1.1 The wind load, snow load and live load acting on architectural glass shall be calculated according to those specified in current national standard "Building Constructions - Specifications for Loads of Architectural Structures" (GB 50009).
3.1.2 The ultimate state of bearing capacity of architectural glass shall be subject to load effect combination according to basic load effect combination, and shall be designed according to the following formula:
γ0S≤R (3.1.2)
Where,
γ0 - the structure importance coefficient, which shall not be less than 1.0;
S - the design value for basic combination of load effect;
R - the design value for strength of glass.
3.1.3 The maximum deflection value generated by the glass plate under the action of characteristic load combination shall meet the requirements of the following formula:
df≤[d] (3.1.3)
Where,
df - the maximum deflection value generated by the glass plate under the action of characteristic load combination;
[d] - the deflection limit of glass plate.
3.1.4 Where seismic action is considered, the wind load and seismic action shall be subject to load effect combination according to basic load effect combination, and the maximum permissible span of architectural glass may be calculated according to the method specified in 5.2 of this specification.
Contents
Foreword I
1 General Provisions
2 Terms
3 Basic Requirements
3.1 Loads and Their Effects
3.2 Design Criteria
4 Materials and Selection
4.1 Glass
4.2 Glass Installation Materials
5 Design against Wind Pressure on Architectural Glass
5.1 Wind Load Calculation
5.2 Design against Wind Pressure
6 Design for Thermal Stress on Architectural Glass
6.1 Design for Thermal Stress
6.2 Measure against Glass Thermal Stress Cracking
7 Criteria for Human Impact Safety
7.1 General Requirements
7.2 Selection of Glass
7.3 Safety Measure
8 Design for Louver Glass and Roof Glass
8.1 Louver Glass
8.2 Roof Glass
9 Design for Floor and Stairway Glazing
9.1 General Requirements
9.2 Design Calculation of Frame-supported Floor and Stairway Glazing
9.3 Design Calculation of Four-point Supported Floor and Stairway Glazing
10 Design for Underwater Glass
10.1 Criteria for Underwater Glass
10.2 Design Calculation of Underwater Glass
11 Design of U Glass Wall
11.1 General Requirements
11.2 Calculation of U Glass
12 Installation
12.1 Setting Dimensions
12.2 Installation Materials
12.3 U Glass Installation
12.4 Installation of Glass Lateral Resistance
Appendix A Method for Calculating the Heat Transfer Coefficient Value of Glass
Appendix B Calculation of Dew Point on Glass
Appendix C Calculation of Parameters for Wind Load
Appendix D Calculation of Tc on Center of Glass and on Frame
Explanation of Wording in This Specification
List of Quoted Standards
