The requirements in terms of internal fixtures and fittings?

The requirements for internal fixtures and fittings will vary depending on the type of building and its intended use. However, some common requirements may include:

1. Lighting fixtures: Adequate lighting is essential for safety and functionality. This may include overhead lighting, task lighting, and emergency lighting.

2. Heating, ventilation, and air conditioning (HVAC) systems: Proper climate control is important for occupant comfort and health. This may include central heating and cooling systems, as well as ventilation systems to ensure good indoor air quality.

3. Plumbing fixtures: This includes sinks, toilets, showers, and bathtubs. These fixtures must be properly installed and maintained to ensure proper functioning and sanitation.

4. Flooring: The type of flooring used will depend on the building's function and aesthetic preferences. Common options include carpet, tile, hardwood, and vinyl.

5. Doors and windows: These fixtures provide access to the building and allow for natural light and ventilation. They must be properly installed and maintained for security and energy efficiency.

6. Cabinetry and storage: Adequate storage space is important for organization and functionality. This may include built-in cabinets, closets, and shelving.

7. Fire safety equipment: This may include smoke detectors, fire extinguishers, and sprinkler systems to ensure the safety of occupants in case of a fire.

8. Security systems: These may include alarms, surveillance cameras, and access control systems to protect the building and its occupants from unauthorized entry.

Overall, the requirements for internal fixtures and fittings will depend on the specific needs and regulations of the building in question. It is important to work with a qualified architect or designer to ensure that all fixtures and fittings meet the necessary requirements and standards.