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What is NYC BC § 1604.8.3?

Quick Answer

This section outlines the requirements for the design and attachment of decks to primary structures. Decks must be anchored securely to withstand vertical and lateral loads, and self-supporting if connections cannot be verified. Applies to building owners constructing or modifying deck structures.

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

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1604.8.3 Decks.

BC § 1604.8.3

Where supported by attachment to an exterior wall, decks shall be positively anchored to the primary structure and designed for both vertical and lateral loads as applicable. Such attachment shall not be accomplished by the use of toenails or nails subject to withdrawal. Where positive connection to the primary building structure cannot be verified during inspection, decks shall be self-supporting. Connections of decks with cantilevered framing members to exterior walls or other framing members shall be designed for both of the following: 1. The reactions resulting from the dead load and live load specified in Table 1607.1, or the snow load specified in Section 1608, in accordance with Section 1605, acting on all portions of the deck.

2.The reactions resulting from the dead load and live load specified in Table 1607.1, or the snow load specified in Section 1608, in accordance with Section 1605, acting on the cantilevered portion of the deck, and no live load or snow load on the remaining portion of the deck.

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