Occupancy calculations may be needed for which type of project documentation?

Occupancy calculations are essential for indoor water use and bicycle facilities because they directly relate to how many occupants will be utilizing the space, which influences water consumption patterns and demand. In the context of LEED certification, understanding occupancy levels helps in designing efficient water systems, such as the number of fixtures needed and their flow rates. It's also relevant for calculating the required number of bicycle facilities, as increased occupancy may necessitate additional bicycle storage and amenities to accommodate the needs of all users.

In contrast, landscaping plans focus primarily on outdoor water use and plant selections, which don't typically require detailed occupancy calculations. Lighting designs relate to energy efficiency and illumination but are not influenced by occupancy in the same way water use is. Lastly, construction timelines pertain to project scheduling and management rather than the specific occupancy needs that inform water efficiency measures. Thus, the connection between occupancy calculations and indoor water use/bicycle facilities makes this answer the most appropriate choice in the context of LEED Water Efficiency criteria.