This code provides guidelines for the selection, cutting, and installation of glass in building facades, windows, and doors. It specifies minimum clearances, glazing materials, and setting practices to safely accommodate wind loads and thermal movements without causing glass breakage.
Code of Practice for Glazing in Buildings
Quick Reference Values
Minimum edge clearance for glass up to 6mm thickness3 mm
Minimum edge cover (bite) for glass up to 6mm thickness5 mm
Minimum face clearance3 mm
Setting block length25 mm to 75 mm
Setting block placementL/4 from corners (quarter points)
Practical Notes
Always use setting blocks made of non-absorbent, durable material (like neoprene or lead) to support glass weight and prevent glass-to-metal contact.
Ensure adequate edge clearance is provided to prevent glass breakage due to thermal expansion or frame deflection.
Weep holes must be provided in the bottom framing of external glazing to drain out any infiltrated moisture.