The existing code sections pertaining to exterior demolition safety zones, required to mitigate material/debris fall hazards to the public, have been revised and include several exceptions.
Department of Buildings Acting Commissioner Kazimir Vilenchik, P.E., today announced the start of a new winter construction safety campaign aimed at promoting work site safety in New York City through greater awareness of the potential for serious injuries and fatalities while on the job.
NYC DOB has released a bulletin clarifying the 10’ horizonal span measurement in Section 3307.6.4.4, Item 7 of the 2022 New York City Building Code.
The existing code section on use of slurry (bentonite or other) to support an excavation (drilled uncased shafts) has been revised, more for clarity than anything else.
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The existing code required at least one means of egress from general open-cut excavations. The revision incorporates the OSHA requirement for multiple means of ingress/egress for trenches (trench definition: 4 feet or greater in depth and 15 feet or less in width) greater than 25 feet in length.
A common-sense guardrail exemption has been added to the revised code, allowing an adequate cover to be used in lieu of guardrails for wells, pits, shafts, or similar excavation.
Cold weather concreting practices and requirements for potentially structurally compromised buildings
The existing code allowed any registered design professional to prepare support of excavation drawings. The revised code allows only a registered professional engineer to prepare support of excavation drawings where the excavation will be carried to depth greater than 20 feet.
The revised code now requires the installation of smoke detectors and wet sprinklers or dry chemical extinguishers (commonly used today) and compliance with egress requirements of Chapter 10, as they relate to door width and travel distance.