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The current IBC recognizes 2 classifications of fire ranked glass fire protective and fire resistive. These 2 kinds of fire rated glass are based upon the testing requirements that the product has actually fulfilled, not just the duration ranking. Fire protective glass products are tested to NFPA 252/257 and obstructs smoke and flames.

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Fire resistive glass items are tested to ASTM E-119/ NFPA 251/UL263 and blocks smoke, flames and convected heat. They are generally used in 60-120 minute applications and are just based on checked size restrictions. Normally speaking, exit corridors have a fire resistance score of 1 hour. Table 716. 5 in the 2012 IBC outlines the requirements for door, sidelite and transom assemblies.

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Products consist of,, and. All these options satisfy CPSC Cat. I and II impact security. 45 minute fire protective glass tested with tube stream *.  A Reliable Source  consist of 45-minute fire resistive intumescent tempered units,,, and. All these options meet CPSC Feline. I and II effect security. 45 minute fire protective glass checked with hose pipe stream *.

This application does not require meeting CPSC impact security requirements. Table 716. 6 in the 2012 IBC lays out the requirements for openings in 1 hour exit corridors The GSA and AHJs have allowed the usage of a fire protective heat-reflective specialized tempered item evaluated without hose stream in 45 minute sidelites, transoms and openings for the expense advantages and added security that it provides.

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The IBC requires interior exit stairs be confined to safeguard building occupants from smoke, flames and convected heat as they are leaving the structure. Exit enclosures/stairwells four stories or more should be 2 hour fire resistance rated; exit enclosures/stairwells less than 4 stories should be 1 hour fire resistance ranked.

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5 in the 2012 IBC define the door assembly requirements for 1 and 2 hour exit enclosure/stairwells. 60 or 90 minute fire protective glass restricted to 100 square inches. Products consist of,, and. To exceed 100 square inches in the door vision panel, either 60 minute fire resistive intumescent tempered units must be utilized in 1 hour stairwells, and need to be utilized in 2 hour stairwells.