Bullet Resistance Classes

Bullet-resistant glass is classified based on its ability to withstand different levels of ballistic threats. The European standard EN 1063 glass defines protection levels ranging from BR1 to BR7 and SG1 to SG2, specifying resistance against various firearms, from handguns to rifles and shotguns.

Testing involves firing three controlled shots in a 120mm triangular pattern on three glass specimens, while SG1 glass undergoes a single shot at the centre. Additionally, UL 752 bullet-resistant glass is tested under American standards, categorising protection levels from Level 1 to Level 10 based on projectile type and velocity.

In India, bulletproof glass standards adhere to IS 15815, which requires testing against five shots for threat levels 1-5, with ammunition defined by the regulations. Furthermore, glass installations in hotels and commercial buildings near airports must comply with Bureau of Civil Aviation Security (BCAS) norms, ensuring the highest safety measures.

Splintering vs Non-Splintering Safety Glass Solutions

Bullet-resistant glass can be classified as splintering (S) or non-splintering (NS):

• Non-splintering glass prevents dangerous shards from dispersing upon impact, minimising injury risks. This option is ideal for locations where occupant safety is a priority.
• Splintering glass, while still offering ballistic protection, is a cost-effective alternative in situations where the risk of injury from glass fragments is minimal.

By incorporating stringent testing and certification processes, these safety glass solutions ensure heightened security for buildings while maintaining transparency and architectural integrity.