Laminated Security Glazing
Review of Test Standards and Results of Testing
Presented on October 13, 2022 at Facade Tectonics 2022 World Congress
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Glass is an essential component for any type of building. Its transparency enhances daylighting and provides occupants a view to the outside. Whether in retail, office, government, educational, religious, or residential structures, glass is an integral part of the design. As a building material, however, its brittleness can be a deterrence from a security perspective. Laminating glass together with a PVB or ionoplast interlayer can help mitigate security threats that range from smash and grab burglary, forced entry, ballistics, to even bomb blast. With these many different types of security threats, questions have arisen over what level of security is needed, which test standard is applicable, and what type of laminate is required. A test program focused on burglary and forced entry was conducted to investigate the performance of laminated glass made with PVB and ionoplast interlayer. Standards from ASTM, Underwriters’ Laboratories, and the European Committee for Standardization (CEN) were chosen as the basis for testing. The results were then compared and grouped based on common laminate makeups.
Architects and designers are incorporating more glass in buildings for better aesthetics, improved daylighting, and occupancy comfort. Despite these benefits, glass is also the most vulnerable component of the building envelope when it comes to attacks by intruders. The use of laminated glass with PVB and ionoplast interlayers not only offers improved safety but can also be designed to help mitigate security threats ranging from basic safety to burglary and forced entry resistance and even ballistic protection. With a wide range of potential threats, it can be overwhelming to determine what type of laminate is required. To address this issue, a test program was initiated to determine how different laminate constructions perform when subjected to various security glazing test methods. The laminates were then grouped based on how they performed.
2 Security Levels
When specifying glazing for a new building or retrofitting an old building, assessing the level of security needed is a critical step that should not be overlooked. While it may
3 Test Results
To investigate the performance of laminated glass with PVB and ionoplast interlayers, multiple test programs were initiated. The following test data is presented primarily as a guide and should not
The intent of the various test programs was to better understand the role of the interlayer when designing security glazing. Evaluation of the test data implies that as the interlayer
Rights and Permissions
1. National Glass Association. (2021). School Security Glazing (Glass Technical Paper FB71-21). Available at: www.glass.org
2. From ANSI Z97.1‐2015, “For Safety Glazing Materials Used in Buildings – Safety Performance Specifications and Methods of Test”, copyright Accredited Standards Committee (ASC) Z97; 800 SW Jackson St Suite 1500, Topeka, KS 66612 – 1200. A copy of the complete standard may be obtained from www.ansiz97.com.
3. DIN (2013) Glass in Building – Pendulum Tests – Impact Test Method and Classification for Flat Glass (EN 12600). Available at: https://www.en-standard.eu/sto...
4. United Laboratories. (2006). Burglary Resisting Glazing Material (UL 972). Available at: https://standardscatalog.ul.co...
5. DIN (2000) Glass in Building – Security Glazing –Testing and Classification of Resistance Against Manual Attack (EN 356). Available at: https://www.en-standard.eu/sto...
6. ASTM F1233-21, Standard Test Method for Security Glazing Materials And Systems, ASTM International, West Conshohocken, PA, 2021, www.astm.org
7. United Laboratories. (2005). Standard for Bullet-Resisting Equipment (UL 752). Available at: https://standardscatalog.ul.co...
8. NIJ. (1985). Ballistic Resistance Protective Materials (NIJ Standard 0108.01). Available at: https://nij.ojp.gov/library/pu...
9. DIN (2000) Glass in Building – Security Glazing –Testing and Classification of Resistance Against Bullet Attack (EN 1063). Available at: https://www.en-standard.eu/sto...
10. U.S. Department of State. (1993). Certification Standard – Forced Entry and Ballistic Resistance of Structural Systems (SD-STD-01.01, Revision G).
11. ASTM F1642-12, Standard Test Method for Glazing and Glazing Systems Subject to Airblast Loadings, ASTM International, West Conshohocken, PA, 2012, www.astm.org
12. ASTM F2912-11, Standard Specification for Glazing and Glazing Systems Subject to Airblast Loadings, ASTM International, West Conshohocken, PA, 2011, www.astm.org
13. Block, V., Bennison, S., Stelzer, I., Rinehart, D.: Blast Resistant Glazing Design - Role of Interlayer Type, Conference Proceedings, Glass Performance days, pp. 458-460, 2011.