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What is NYC AC § 27-647?

Quick Answer

This section establishes the allowable maximum areas for various types of glass used in construction, specifying that these areas can be determined by multiplying values from designated tables. It affects building owners who utilize different glass types in their properties.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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§ 27-647 Special glasses.

AC § 27-647

For types of glass other than single annealed sheet and plate glass, allowable maximum areas may be determined by multiplying values in table 10-7 by the appropriate multiplying factor listed in table 10-8. TABLE 10-8Multiplying Factors for Various Types of Glass Glass TypeMultiplying Factor Full tempered 4.0 Heat strengthened 2.0Factory-fabricated double glazing *1.5*Laminated 0.6 Wired 0.5 Sandblasted or etched 0.4 * For asymmetrical units base strength on thinner lite.

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