• designing and giving advice on the installation of
  various types of building services (such as elevators,
  air-conditioning, ventilation etc)

• evaluating tenders received for mechanical works

• supervising the installation of building services,
  ensuring that specifications for standards, performance
  and safety are met

• ensuring that building systems are in good working
  order before handing the project over to the client

• overseeing the testing, maintenance and repair of the
  building systems for refurbished buildings; the
  mechanical engineer needs to ensure that new building
  services will fit into the existing building