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2024 International Building Code
Chapter 24

IBC 2024

2024 International Building Code

Chapter 24Glass And Glazing

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Question 1 1.

What types of glazing materials are governed by Chapter 24 of the IBC?

Glass and light-transmitting ceramic panels only.
Glass, light-transmitting ceramic, and light-transmitting plastic panels for exterior use only.
Glass, light-transmitting ceramic, and light-transmitting plastic panels for exterior and interior use in both vertical and sloped applications.
Only light-transmitting plastic glazing for exterior and interior use.

Question 2 2.

How does the IBC 2024 Chapter 24 treat the installation requirements for replacement glass?

Replacement glass installations are permitted to follow less stringent requirements than new installations.
Replacement glass installations must meet the same requirements as new installations.
Replacement glass installations are exempt from the provisions of Chapter 24 if the original glass met prior code.
Replacement glass only needs to comply with safety glazing requirements.

Question 3 3.

How must tempered glass, excluding tempered spandrel glass, be identified?

With a removable paper marking.
By a manufacturer's label that can be easily peeled off.
Permanently identified by the manufacturer using methods like acid etching, sandblasting, or ceramic firing, which cannot be removed without destruction.
Only a certificate from the manufacturer is required, no physical mark on the glass.

Question 4 4.

If one or more sides of a pane of glass are not firmly supported or are subjected to unusual load conditions, what is required?

Only a general contractor's approval is sufficient.
Detailed construction documents, shop drawings, and analysis or test data ensuring safe performance, prepared by a registered design professional.
The glass thickness must be doubled.
A waiver from the building official is required, with no further documentation.

Question 5 5.

For glass framing to be considered "firmly supported" when the glass edge length is 10 feet, what is the maximum permissible deflection of the edge of the glass perpendicular to the glass pane?

1/240 of the glass edge length + 1/4 inch.
1/175 of the glass edge length.
1/100 of the glass edge length.
1/300 of the glass edge length.

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