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Demolition operations shall not commence until the applicable pedestrian and adjoining property protection is in place as required by Sections 3307, 3308, and 3309. In addition, safety zones and measures to prevent access shall be implemented as required by Sections 3306.2.1 and 3306.2.2.
3306.2.1 Preventing Access
The permit holder, or where there is no permit holder, the person causing the demolition work to be performed, shall institute and maintain measures to prevent persons other than workers from entering areas where demolition work is occurring, debris is stored, or equipment is located.
3306.2.2 Safety Zone for Exterior Demolition
Where demolition work occurs on the exterior of a building, the permit holder, or where there is no permit holder, the person causing the demolition work to be performed, shall institute and maintain a safety zone around the site to prevent persons other than workers from entering such safety zone. Where the safety zone precludes access to the entire demolition site, it shall be considered to satisfy the requirements of Section 3306.2.1.
Exception: A safety zone is not required for the following types of work. Relief from the safety zone requirements does not grant relief from applicable pedestrian and adjoining property protection required by Sections 3307, 3308, and 3309, nor from the requirements of Section 3306.2.1.
  1. Demolition work whose scope is limited to a minor alteration or ordinary repair, and is accomplished without any mechanical demolition equipment, other than handheld devices.
  2. Work whose scope is limited to the alteration, maintenance, or repair of a façade, and which does not constitute a façade recladding as defined in rules promulgated by the commissioner, and is accomplished without any mechanical demolition equipment, other than handheld devices.
  3. Demolition work accomplished without any mechanical demolition equipment, other than handheld devices, provided the entire exposure where demolition work is to occur is covered by either:
    1. A supported scaffold with netting and guardrails in accordance with Section 3314.8; or
    2. A site specific engineered enclosure system in accordance with Section 3309.17
3306.2.2.1 Approval of the Commissioner
Where a safety zone is required by Section 3306.2.2, it shall be approved by the commissioner.
3306.2.2.2 Size of Safety Zone for Mechanical Demolition
Where mechanical demolition equipment, other than handheld devices, is to be used for the full or partial demolition of a building, the safety zone shall be equal to or greater than half the height of the building to be demolished; such safety zone may be reduced by the same ratio as the building is being demolished.

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Demolition operations shall not commence until the applicable pedestrian and adjoining property protection is in place as required by Sections 3307 ...
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Demolition operations shall not commence until the applicable pedestrian and adjoining property protection is in place as required by Sections 3307 ...
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Demolition operations shall not commence until the applicable pedestrian and adjoining property protection is in place as required by Sections 3307 ...