Planning and execution of construction work in the field of civil engineering and building construction, including building services, assumption of construction management, execution of related orders such as calculations, expert opinions, planning, financing, creation, brokerage, rental, administration and sale of residential, industrial and settlement buildings of all kinds as well as general contracting; may establish branches and subsidiaries, participate in other companies, acquire, encumber, sell and manage real estate, arrange financing for its own account or for the account of third parties, and provide security for liabilities of affiliated companies.