3305.3.2.1 Design Drawings

Site-specific formwork design drawings prepared by a registered design professional shall be required in the following cases:

1. For concrete formwork in a structure classified as a major building; or
2. Wherever the shore or form height exceeds 14 feet (4267 mm); or
3. Wherever the total vertical load on the forms exceeds 150 pounds per square foot (732 kg/m²); or
4. Wherever power buggies are used; or
5. Wherever multi-stage shores are used; or
6. Wherever the slab thicknesses or beam heights equal or exceed 10 inches; or
7. Wherever there are concentrated loads exceeding 2000 pounds (907 kg) imposed on the formwork; or
8. Wherever there are loads imposed on existing structures in accordance with Section 3305.3.1.2.1.

Exception: Design drawings prepared by a registered design professional are not required for formwork installed in conjunction with slabs supported directly on grade or footings where such slab or footing does not impart any load on an adjacent structure.