ISO 28278-1:2011
Glass in building — Glass products for structural sealant glazing — Part 1: Supported and unsupported monolithic and multiple glazing
ISO 28278-1:2011 specifies requirements for the suitability of supported and unsupported glass products for use in the structural sealant glazing (SSG) technique. Regarding glass products, ISO 28278-1:2011 constitutes a supplement to the requirements specified in the corresponding international standards with regard to verifying suitability for use in SSG systems.
Only soda lime silicate glass is taken into consideration in ISO 28278-1:2011.
The glass products are installed and bonded into the support under controlled environmental conditions as described in ISO 28278-2.
Plastic glazing is excluded from the scope of ISO 28278-1:2011.
The structural weatherproofing and sealant and outer seal of IGU products, which are commonly used in structural glazing applications are those based on organo-siloxane,"silicone" polymers, and recommended for use by the sealant manufacturer. Where there is a risk of earthquakes, the sealant design may not be sufficient to resist the loads, and complementary arrangements may be necessary.
ISO 28278-1:2011 does not preclude the use of other sealant types where these can demonstrate suitability for service according to ISO 28278-1:2011 and when used following the recommendations of the sealant manufacturer.
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1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle
6 Required characteristics of glass products
6.1 Appropriate glass products
6.1.1 Float glass
6.1.2 Polished wired glass
6.1.3 Drawn sheet glass
6.1.4 Patterned glass
6.1.5 Coated glass
6.1.6 IGU
6.1.7 Heat strengthened soda lime silicate glass
6.1.8 Thermally toughened soda lime silicate safety glass
6.1.9 Heat soak tested thermally toughened soda lime silicate safety glass
6.1.10 Laminated glass and laminated safety glass
6.2 Dimensional tolerances
6.2.1 Glass shapes — Curved glass
6.3 Corners, notches and holes
7 Verification of the suitability of glass products for use in SSG systems when exposed to ultraviolet (UV) radiation
7.1 General
7.2 IGU
7.2.1 Situation 1 (see Figure 3)
7.2.2 Situation 2 (see Figure 3)
7.2.3 Coated glass
7.2.3.1 Adhesion of coatings to glass surfaces and adhesion of coatings to interlayer used for laminated glass products
7.2.3.1.1 Bonding — Outer seal without structural function
7.2.3.1.2 Bonding — Outer seal with structural function
7.2.3.2 Substitution of the coated glass when the coating at the edge does not require removal
7.2.4 Possibility of substituting the outer IGU seal
7.2.5 Further requirements for the outer IGU seal when in an unsupported case
7.2.6 Case for a façade glazed between 0° and 30° from the vertical (towards the outside) and between 0° and 7° from the horizontal
7.3 Laminated glass or monolithic glass — Situation 3 (see Figure 3)
7.4 Assessment of the adhesion between the sealant and the glass
7.4.1 Float glass
7.4.2 Coated glass
7.4.3 Enamelled glass
7.4.4 Patterned glass
8 Design
8.1 Calculation of the thickness of the glass
8.2 Calculation of the height of the outer sealant of the IGU for supported and unsupported glazing
8.2.1 Supported IGU
8.2.1.1 Flush edge unit
8.2.1.2 Stepped IGUs
8.3 Calculation of the height of the outer sealant of the IGU for unsupported glazing
8.3.1 Calculation of the height regarding the relevant combined load of the wind, snow and selfweight and relevant combined load for wind, snow and self weight
8.3.1.1 Outer seal with a structural function
8.3.1.2 Outer seal without structural function
8.3.2 Calculation of the height of the outer seal to bear the permanent shear loading
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1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle
6 Required characteristics of glass products
6.1 Appropriate glass products
6.1.1 Float glass
6.1.2 Polished wired glass
6.1.3 Drawn sheet glass
6.1.4 Patterned glass
6.1.5 Coated glass
6.1.6 IGU
6.1.7 Heat strengthened soda lime silicate glass
6.1.8 Thermally toughened soda lime silicate safety glass
6.1.9 Heat soak tested thermally toughened soda lime silicate safety glass
6.1.10 Laminated glass and laminated safety glass
6.2 Dimensional tolerances
6.2.1 Glass shapes — Curved glass
6.3 Corners, notches and holes
7 Verification of the suitability of glass products for use in SSG systems when exposed to ultraviolet (UV) radiation
7.1 General
7.2 IGU
7.2.1 Situation 1 (see Figure 3)
7.2.2 Situation 2 (see Figure 3)
7.2.3 Coated glass
7.2.3.1 Adhesion of coatings to glass surfaces and adhesion of coatings to interlayer used for laminated glass products
7.2.3.1.1 Bonding — Outer seal without structural function
7.2.3.1.2 Bonding — Outer seal with structural function
7.2.3.2 Substitution of the coated glass when the coating at the edge does not require removal
7.2.4 Possibility of substituting the outer IGU seal
7.2.5 Further requirements for the outer IGU seal when in an unsupported case
7.2.6 Case for a façade glazed between 0° and 30° from the vertical (towards the outside) and between 0° and 7° from the horizontal
7.3 Laminated glass or monolithic glass — Situation 3 (see Figure 3)
7.4 Assessment of the adhesion between the sealant and the glass
7.4.1 Float glass
7.4.2 Coated glass
7.4.3 Enamelled glass
7.4.4 Patterned glass
8 Design
8.1 Calculation of the thickness of the glass
8.2 Calculation of the height of the outer sealant of the IGU for supported and unsupported glazing
8.2.1 Supported IGU
8.2.1.1 Flush edge unit
8.2.1.2 Stepped IGUs
8.3 Calculation of the height of the outer sealant of the IGU for unsupported glazing
8.3.1 Calculation of the height regarding the relevant combined load of the wind, snow and selfweight and relevant combined load for wind, snow and self weight
8.3.1.1 Outer seal with a structural function
8.3.1.2 Outer seal without structural function
8.3.2 Calculation of the height of the outer seal to bear the permanent shear loading