This standard specifies the requirements for various types of flat glass, including float, sheet, patterned, and wired glass, intended for use in building glazing and paneling. It outlines classifications, dimensional tolerances, quality criteria for visual defects, and key performance characteristics.
Specifies requirements for various types of glass used in glazing and paneling, relevant for building envelopes.
Quick Reference Values
Tolerance on 4mm nominal thickness (float glass)±0.2 mm
Tolerance on length/width (for thickness ≤ 10mm)+2 / -1 mm
Maximum overall bow (float glass)0.3% of edge length
Minimum light transmittance for clear float glass (4mm)87%
Viewing distance for defect inspection (float glass)2 m
Practical Notes
This code covers basic flat glass sheets, not processed products. For toughened or laminated glass, refer to IS 2553.
During quality inspection, pay close attention to the defect tables (e.g., Table 4 for spot faults) as visual acceptance is a major part of this standard.
Ensure the marking on the glass or its packaging corresponds to the type and quality specified in the project documents, as per Clause 8.