Here are some common types of retrofitting works:

Structural Retrofitting: This involves strengthening the structural components of a building or infrastructure to improve its resistance to seismic activity, wind loads, or other external forces. Methods may include adding steel braces or beams, reinforcing concrete elements, or installing additional support systems.

Energy Efficiency Retrofitting: This focuses on improving the energy efficiency of a building by upgrading insulation, windows, HVAC systems, lighting, or other energy-consuming components. These improvements can reduce energy consumption, lower utility costs, and enhance indoor comfort.

Seismic Retrofitting: Seismic retrofitting is specifically aimed at improving a structure's ability to withstand earthquakes. This may involve adding steel braces, reinforcing walls or foundations, or installing base isolators or dampers to absorb seismic energy.

Fire Safety Retrofitting:Fire safety retrofitting involves installing or upgrading fire suppression systems, fire-resistant materials, fire alarms, or emergency exit systems to enhance the safety of occupants and reduce the risk of fire-related damage.

Accessibility Retrofitting: This type of retrofitting focuses on making a structure more accessible to people with disabilities. It may involve installing ramps, elevators, accessible restrooms, or modifying doorways and pathways to comply with accessibility standards.

Environmental Retrofitting: Environmental retrofitting aims to improve the sustainability and environmental performance of a structure. This may include installing renewable energy systems, rainwater harvesting systems, green roofs, or implementing waste management and recycling systems.

Retrofitting works require careful planning, engineering expertise, and compliance with relevant building codes and regulations. It is important to work with professionals who have experience in retrofitting projects and can ensure that the modifications are carried out safely and effectively. Additionally, proper documentation and permits may be required, depending on the scope and nature of the retrofitting works.