How thick should the glass railing be?

How thick should the glass railings be?



The IBC specifies that glass for glass railings must be at least 1/4 inch (6 mm) thick, glass railings are tempered or heat strengthened glass with top rails. Laminated glass is required for those without top rails.The loads are the 200 pounds point load and the 50 pounds concentrated load.


The IBC is used as a reference for local codes and may vary depending on each local regulation. To ensure your installation meets local regulations, you are encouraged to read your local regulations and safety rules.


IBC1607.7.1 Handrails and guards. Handrail assemblies and guards shall be designed to resist a load of 50 pounds per linear foot (pound per foot) (0.73 kN/ m) applied in any direction at the top and to transfer this load through the supports to the structure.


IBC1607.7.1.1Handrail assemblies and guards shall be able to resist a single concentrated load of 200 pounds (0.89kN), applied in Handrail assemblies and guards shall be able to resist a single concentrated load of 200 pounds (0.89kN), applied in any direction at any point along the top, and have attachment devices and supporting structure to transfer this loading to appropriate structural elements of the building.


The thickness of tempered glass for glass railing

1/4 inch (6mm)

5/16 inch (8mm)

3/8 inch (10mm)

1/2 inch (12mm)

5/8 inch (15mm)

3/4 inch (19MM)


The thickness of laminated glass for glass railing

Laminated glass consists of a laminated layer with 2 single pieces of glass. The laminated layers are PVB, EVA, etc. Usually, we use PVB.


Commonly used PVB thickness: 0.38mm, 0.76mm, 1.14mm, 1.52mm


Single glass size 13/64 inch (5mm), 1/4 inch (6mm), 5/16 inch (8mm), 3/8 inch (10mm)


Laminated glass thickness for glass railing, here we use 1.52mm thickness PVB

13/64 inch (5mm) + 1.52PVB + 13/64 inch (5mm) = 7/16 inch (11.52mm)

1/4 inch (6mm) + 1.52PVB + 1/4 inch (6mm) = 9/16 inch (13.52mm)

5/16 inch (8mm) + 1.52PVB + 5/16 inch (8mm) = 11/16 inch (17.52mm)

3/8 inch (10mm) + 1.52PVB + 3/8 inch (10mm) = 27/32 inch (21.52mm )


You can choose any of the above thicknesses, but the thickness of the glass is related to the structure of the railing design, and the installed glass railing needs to meet the loading requirement The loads are the 200 pounds point load and the 50 pounds concentrated load


YS railing systems use durable glass and railing accessories that meet these standards, ensuring compliance with all national building codes. Providing you with a safe and highly visible railing solution.

YS railing system experts will provide you with the best railing for your needs. Email us!