IS 2553 Part 1:2018 is the Bureau of Indian Standards specification for safety glass used in architectural, building, and general applications - covering both toughened (tempered) glass and laminated glass products. This standard is directly aligned with public safety - a glass panel that fails to meet IS 2553 requirements could shatter into dangerous shards in a door, window, or facade, causing serious injury to building occupants.
Key requirements under IS 2553 Part 1:2018 include:
Fragmentation test for toughened glass - when broken, toughened glass must produce small, relatively blunt fragments rather than large sharp shards. IS 2553 defines the maximum size and count of glass particles after breakage
Impact resistance - the glass must withstand defined impact loads simulating human body contact without failing dangerously
Optical quality - distortion, bubbles, and visual defects must be within defined limits
Thickness tolerance - glass thickness must conform to specified tolerances
Bending strength - the glass must meet defined mechanical strength requirements
For laminated glass - interlayer quality, adhesion, and post-breakage retention performance requirements
Dimensional accuracy - size and edge quality requirements
Marking requirements - ISI Mark and required identification must be permanently marked on every certified safety glass unit
BIS certification under IS 2553 Part 1:2018 is mandatory for safety glass manufacturers in India. Architects, builders, and project consultants specify BIS-certified safety glass as a non-negotiable building material requirement - and the National Building Code of India references safety glass standards in its safety requirements for glazed building elements.
