TMMOB/MMO – Turkish Union of Chambers of Engineers & Architects – Chamber of Mechanical Engineers (1979)
TMMOB/EMO – Turkish Union of Chambers of Engineers & Architects – Chamber of Electrical Engineers (2001)
TOBB/ATO – Union of Chambers & Stock Exchanges – Ankara Trade Chamber (1983)
TTMD -Association of Turkish HVAC & Sanitary Engineers (1992)
ATCEA – Association of Turkish Consulting Engineers & Architects (1985)
FIDIC – International Federation of Consulting Engineers (1987)
ASHRAE – American Society of HVAC Engineers (1993)
EFCA – European Federation of Consulting Engineering Associations (2002)