Horizontal and vertical safety netting shall be provided when required below. Safety netting is required in addition to the sidewalk sheds, fences, and other pedestrian protection required by Section 3307.
When exterior walls are being constructed, altered or repaired at a height greater than 6 stories or 75 feet (22 860 mm), horizontal safety netting shall be provided on the sides of the structure where the structure is not enclosed. A structure shall be considered to be enclosed when the permanent facade is completed except for the windows. Such windows shall be protected to a height specified in Section 3308.3 unless there is a sill not less than 2 feet 6 inches (762 mm) in height and vertical mullions or piers with a maximum opening of 5 feet (1524 mm) and a non-corrosive wire cable capable of withstanding a load of at least 200 pounds (90.7 kg) applied in any direction except upward.
When during the course of construction the building reaches a height of 6 stories or 75 feet (22 860 mm), horizontal safety netting shall be maintained at a level not more than two stories or 30 feet (9144 mm) below the stripping operation on concrete structures or the uppermost finished (and walkable) concrete floor on steel frame structures. The horizontal safety netting may be removed after the formwork for the topmost level of concrete is removed or after the topmost level of concrete for a steel building is poured.
When demolition of the exterior walls or the roof of a structure occurs at a height greater than 6 stories or 75 feet (22 860 mm), horizontal safety netting shall be provided. The horizontal safety netting shall be constructed and maintained not more than two stories or 30 feet (9144 mm) below the story from which the exterior walls and roof are being removed until the demolition has progressed to within six stories or 75 feet (22 860 mm) off the ground or adjoining roof level
Horizontal safety netting shall consist of a horizontal system of nets and their supports that meet requirements set forth in department rules, and shall include a structural net lined with a debris net of a size and strength sufficient to catch falling tools and materials.
Horizontal safety netting shall project outward horizontally from the edge of the floor a minimum distance of 10 feet (3048 mm).
Vertical safety netting shall consist of a vertical system of nets and their supports that meet requirements set forth in department rules. Vertical safety netting shall be of a fine mesh of a size and strength sufficient to contain falling tools and materials. Wall opening screens, grills or tarpaulins may be used in lieu of vertical safety netting, provided that they shall be of such construction and mounting as to retain debris.
The holder of the work permit and his or her designee shall be responsible for the installation and maintenance of all horizontal and vertical netting, and for complying with the requirements of this section.
Where requests are made regarding interpretations, consultations, and reconsiderations of safety netting, the commissioner may, in specific cases, modify these regulations where proper methods are proposed to be employed.
Any appeal shall state the specific relief requested and shall make reference to the Site Safety Program, where applicable, the practical difficulty, proposed equivalencies consistent with public safety, and any stipulations.